bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Synchrophasor Measurements for Improving Situational Awareness of the Power System
Authors: Obushevs A. , Mutule A.
Published: May 2018

The paper focuses on the application of synchrophasor measurements that present unprecedented benefits compared to SCADA systems in order to facilitate the successful transformation of the Nordic-Baltic-and-European electric power system to operate with large amounts of renewable energy sources and improve situational awareness of the power system. The article describes new functionalities of visualisation tools to estimate a grid inertia level in real time with monitoring results between Nordic and Baltic power systems.
The Control Principles of the Wind Energy Based DC Microgrid
Authors: Zaleskis G. , Rankis I.
Published: May 2018

According to the strategical objectives of the use of the renewable energy sources, it is important to minimise energy consumption of conventional power grid by effective use of the renewable energy sources and provi-ding stable operation of the consumers. The main aim of research is to develop technical solutions that can provide effective operation of the wind generators in the small power DC microgrids, which also means wind energy conversion at as wider generator speed range as possible.
Modelling of Two-Stage Methane Digestion With Pretreatment of Biomass
Authors: Dychko A. , Remez N. , Opolinskyi I. , Kraychuk S. , Ostapchuk N. , Yevtieieva L.
Published: May 2018

Systems of anaerobic digestion should be used for processing of organic waste. Managing the process of anaerobic recycling of organic waste requires reliable predicting of biogas production. Development of mathematical model of process of organic waste digestion allows determining the rate of biogas output at the two-stage process of anaerobic digestion considering the first stage. Verification of Konto’s model, based on the studied anaerobic processing of organic waste, is implemented. The dependencies of biogas output and its rate from time are set and may be used to predict the process of anaerobic processing of organic waste.
Additive Manufacturing and Casting Technology Comparison: Mechanical Properties, Productivity and Cost Benchmark
Authors: Vevers A. , Kromanis A. , Gerins E. , Ozolins J.
Published: May 2018

The casting technology is one of the oldest production technologies in the world but in the recent years metal additive manufacturing also known as metal 3D printing has been evolving with huge steps. Both technologies have capabilities to produce parts with internal holes and at first glance surface roughness is similar for both technologies, which means that for precise dimensions parts have to be machined in places where precise fit is necessary. Benchmark tests have been made to find out if parts which are produced with metal additive manufacturing can be used to replace parts which are produced with casting technology. Most of the comparative tests have been made with GJS-400-15 grade which is one of the most popular cast iron grades. To compare mechanical properties samples have been produced using additive manufacturing and tested for tensile strength, hardness, surface roughness and microstructure and then the results have been compared with the samples produced with casting technology. In addition, both technologies have been compared in terms of the production time and production costs to see if additive manufacturing is competitive with the casting technology. The original paper has been written in the Latvian language as part of the Master Thesis within the framework of the production technology study programme at Riga Technical University.
Measurement of Low Concentration of Nanosized Objects Suspended in a Liquid Medium
Authors: Merkulovs D. , Vilitis O. , Kozlovs V.
Published: May 2018

The new optical scheme of refractometer with temperature stabilisation 10−2 °C is developed, which allows measuring a refractive index of the sample with accuracy not worse than 10−5; dependence of refraction index on concentration of SiO2 nanoparticles in liquid suspension is obtained within the framework of the research.
Prognosis and Survivability in Surgically Treated Metastasis of the Long Bones
Authors: Bădilă A. , Manolescu R. , Japie I. , Bădilă E. , Papuc A. , Popovici C. , Tihulcă M. , Bujdei A. , Rădulescu D. , Cîrstoiu C. , Rădulescu R.
Published: May 2018

Aim: To assess the clinical results after osteosynthesis with locked intramedullary nail in metastasis of the long bones. Material and methods. We designed a prospective study in which we included all the patients with metastasis of the long bones admitted and surgically treated in our department between 2013 and 2015. Data for 64 were available at the final check-up. Our cohort totalized a number of 69 fractures (2 long bones required surgical treatment in 5 patients). The mean follow-up for survivors was 37 months (limits: 18-49 months). The primary tumor was known in 51 patients (79,69%). For the remaining 13 cases (20,31%), the primary tumor was not known and the pathological fracture was the first sign of the malignant disease. In the last group, the tumor could be identified by imagistic methods in 6 cases, while in other 3 cases, a biopsy and histological examination (which were performed in all the remaining 7 cases) determined the source organ. Clinical and radiological check-ups were performed at every 3 months in the first year and at every 6 months after that. Results. Pain amelioration and mobilization of the involved limb were achieved in all the cases. In 3 patients, the osteosynthesis could not compensate the progressive bone loss and the permanent use of an external orthosis was mandatory. The survival rate was 82,81% at 6 months and 67,19% at 12 months. Conclusions. All patients could be mobilized. Two thirds of the patients will survive more than a year. The goals of osteosynthesis are the same, regardless the location of the fracture and implant used: pain amelioration, stability for immediate full weight bearing, durability for patient’s life expectancy.
Soft Tissue Giant Cell Tumor - Incidence and Therapeutic Results
Authors: Popa M. , Panti Z. , Nica M. , Pleniceanu M. , Şerban B. , Ene R. , Cîrstoiu C.
Published: May 2018

Introduction. Giant cell tumors of soft tissue (GCTs) have a relatively low incidence and their low prognosis is reserved to local relapses and distant metastases. This type of pathology usually affects adults and the elderly and it is localized in the extremities, most frequently in the thigh. Materials and methods. GCT is a relatively low aggressive tumor; approximately 85% of the patients survive at least 5 years after diagnosis. The risk factors for low prognosis are old age, metastases at the time of diagnosis, local relapse. We conducted this study in the University Emergency Hospital, Bucharest for a period of 3 years, between 01.01.2015 and 01.01.2018, which included 20 patients with ages between 22 and 83 years, of whom 9 were women and 11 were men. Results. Excision with safety margins was performed for all patients. During surgery, tissue samples from 6 different areas were sent for extemporaneous examination. After excision, the histopathological examination was performed and the diagnosis of GCT was established. Localized forms were described in 16 cases; diffuse forms were identified in 4 cases and loco-regional recurrences in 3 cases. Pre or postoperative adjuvant treatment was not applied in any of the cases. Conclusions. GCT is a rare, potentially malignant pathology, in which case evolution is unfavorable. From the clinical and imaging point of view, it is difficult to establish this diagnosis due to the large variety of pathologies it can be mistaken for, making biopsy an essential step within the diagnostic algorithm. Election treatment is represented by local excision with safety margins.
Surgical Options in Periprosthetic Fractures
Authors: Popescu D. , Nedelcu R. , Trifu Şt. , Cîrstoiu C.
Published: May 2018

Purpose. The periprosthetic fractures are a more and more often encountered type of pathology, in which the main problem is the indication for surgery. The most important thing is the choice of the best therapeutic option in order to get a solid fixation of the fracture and, in the end, to allow an early patient’s mobilization. Materials and method. 38 cases of periprosthetic fractures have been treated in the Orthopedics and Traumatology Department of University Emergency Hospital in Bucharest, between 2010 and 2016. International Vancouver classification was used for all cases. The osteosynthesis saving the femoral stem was preferred in 22 cases, as its stability was not affected. Stem revision was performed in 16 cases, as this was unstable due to the fracture. Acetabular component was also revised in 4 cases, as the PE insert presented severe wear. The patients were aged 52 to 84 years old and sex ratio M/ F = 13/ 25. Osteosynthesis was performed using Dall-Miles plates and molded plates, with braided cables or wire cerclage. Long stems, uncemented with or without distal locking, were used in 16 cases. Results. Postoperatively, the bone repair was efficient regarding the stability in most of the cases. The patients’ mobilization was early in most of the cases, except for the very old patients with associated comorbidities and limited biological resources. Conclusions. An appropriate surgical indication, adapted on each type of peri-implant fracture, leads to a good result, with early mobilization and the best consolidation of the fracture.
Magnetic Resonance Imaging Assessment of Soft Tissue Tumours
Authors: Codorean I.B. , Codorean I. , Tănase Ş.
Published: May 2018

Introduction. Due to the non-specific clinical findings and the reduced sensitivity of conventional radiography, soft tissue tumors (STT) were virtually unknown to radiologists until ultrasonography and computerized tomography were introduced. Because of its superior soft tissue contrast, multiplanar imaging capability, Magnetic Resonance Imaging (MRI) is the favored modality for the evaluation of soft tissue tumors. Purpose. MRI detection, characterization, and illustration of soft tissue tumors developed in the musculoskeletal system Material and method. The retrospective study refers to a group of 77 patients with suggestive clinical symptomatology for a soft-expanding process developed in the musculoskeletal system. Patients were examined according to a protocol that included complete clinical examination, two incidents radiographic examination, MRI, histopathological examination. The group consisted of 44 men (57%) and 33 (43%) women, aged between 7 and 80. Results. We presented the spectrum of identified types of tumors based on the MRI semiology elements (homogeneity and intensity of the signal in the native and post-contrast standard sequences, intra or extra compartmental localization, tumor size and shape), segmental location, and incidence relative to the histological type. Conclusions. Through high contrast resolution and the ability to acquire and display multiplanar, MRI is currently investigating choice in the detection and characterization of soft tumor tumors. The multiplanar images (axial, frontal, sagittal and oblique) provide complete data on the actual tumor extension, the appearance of vessels, nerves, bone segments, and adjacent joints to tumor formations, allowing the proper staging and appropriate therapeutic behavior.
A Review of 493 Radiographs of Domestic Dogs and Cats for Neoplasia and Neoplasia Suspicious Signs
Authors: Lescai D.
Published: May 2018

Cats and dogs are routinely diagnosed with different forms of neoplasia. One of the simplest imaging techniques is radiography. This way one can assess neoplastic extent affecting soft and bone tissue. 493 radiographs from 235 dogs and cats have been reviewed. 372 radiographs for 94 dogs, an average of 5.2 images for every dog and 121 radiographs for 48 cats, an average of 2.5 images for each cat were done. 27 relevant or suspect radiographs were done in dogs, for a total of 14 neoplastic subjects, corresponding to 6 relevant or suspect images for a total of 3 neoplastic processes in cats. This is translated into a proportion of 7.25% relevant or suspect radiographs in dogs and 4.95% in cats. It also means that 14.89% of the dogs that require radiographic examination and 2.47% of the cats are suffering or are suspicious for neoplastic disease. 5 out of 14 (35%) dogs had relevant radiographs for bone tissue neoplasia, 1 dog (7%) for muscular neoplasia and 4 dogs (28.5%) were suspicious for digital (mixed soft tissue/ bone tissue) neoplasia. 1 out of 3 cats had relevant images for muscular neoplasia and 2 cats for maxillary/ acetabular neoplasia.
Surgical Treatment Alternative to the Hip Disarticulation in Pacients with Malignant Tumor of the Proximal Femur
Authors: Moga M. , Dinache G. , Pogărăşteanu M. , Lupascu S.
Published: May 2018

Background. Primary bone tumors are rare and affect especially young persons, being at the same time very aggressive and mutilating, often also implicating the disarticulation of the affected hip. That is why it is necessary to find alternatives of treatment, so that these young people to be able to keep their normal functionality and mental comfort. Objectives. The objective of this paper was to be able to offer a surgical treatment alternative to the hip disarticulation in case of malignant tumors of the proximal femur in young patients. Methods. We present the case of a 25-year-old female patient, who was hospitalized in our clinic for pain and functional impairment of the right hip. The clinical and radiological exams established the diagnosis of fracture of pathological bone of the proximal femur and it raised the suspicion of a tumor with malignant characters. We performed arteriography of the right inferior member, which showed a very good vascularized tumor, possibly vascular, localized to the proximal femur, arterially powered by the branches of right profunda femoris artery. We surgically intervened and made an incisional biopsy with anatomopathological exam, which established the diagnosis of osteosarcoma. Then, we practiced the segmental resection of the tumor, preceded by the embolization of the right femoral artery and after that the reconstruction with bipolar cemented modular prosthesis of the right hip. The patient had a favorable evolution, she did neuromotor rehabilitation, and then she presented to the oncologist for the initiation of adjuvant chemotherapy, which she followed conformably to the recommendations.
Secondary Bone Determinations in Choriocarcinoma
Authors: Berceanu C. , Cîrstoiu M.M. , Brătilă E. , Mehedinţu C. , Berceanu S. , Voicu N.L. , Tetileanu A.V.
Published: May 2018

Gestational trophoblastic diseases represent a heterogeneous group of disorders that arise from trophoblastic epithelium. Choriocarcinoma is a highly anaplastic malignancy derived from trophoblastic cells. It is characterized by the secretion of human chorionic gonadotropin and early hematogenous metastasis. Metastatic choriocarcinoma in bones is very rare. Gestational trophoblastic diseases can follow normal pregnancy, ectopic pregnancy, abortions or molar pregnancy. However, the presence of bone metastases in a young woman at reproductive age requires systematic assessment for a primary lesion, for 1-2 years. This paper aims to present the bone sites where these metastases can occur, as well as the review of literature supported by a pictorial essay.
Soft Tissue Sarcomas - Series of Cases in One Surgical Department
Authors: Costea R.V. , Zărnescu N. , Chirca A. , Rusu O. , Neagu S.
Published: May 2018

Introduction. Soft tissue sarcomas (STS) are a heterogeneous group of tumors with over 80 different subtypes that account for approximately 1-2% of adult malignancies. Primary sarcomas arise from a variety of soft tissues and bone, and include fibrous connective, fat, and smooth, or striated muscle, vascular, peripheral neural and visceral tissue. With difficulties in establishing cell origin and pathogenesis, this condition lacks an effective and durable therapy with no predictive biomarkers and rapid diagnosis. Materials and methods. We reviewed the cases of 21 patients treated in our clinic for soft tissue sarcoma over a 20-year period (1999-2018). We extracted the following information from each patient’s medical record: disease status at presentation, histological diagnosis, American Joint Committee on Cancer staging, surgical procedure, oncological outcome, length of hospitalization, and follow-up information. Results. All 21 patients (14 males and 7 females, aged between 19 and 88 years) underwent surgery and total excision with safety margins was performed with histopathological confirmation stating the tumor type and subtype. Some samples required immunohistochemistry for subtype differentiation. Chondrosarcoma and myosarcoma were the most common (5 patients). 8 patients presented local recurrence and metastatic disease with 6 cases receiving adjuvant chemotherapy. Only one patient presented for the 5-year follow-up. Conclusions. STS are a rare group of tumors with poor outcome with surgical treatment being represented by total excision. We chose to present our clinic’s experience to highlight the need for post-operative therapy advancements and to raise awareness on the difficulties in managing these cases.
Results Evaluation of Resection-Reconstruction of Knee Periarticular Tumors
Authors: Cismașiu R.S. , Bîrluțiu R.M. , Tudor A. , Pop D. , Stoica C.I.
Published: May 2018

Oncological resection and articular reconstruction through modular tumor prosthesis is a challenge for the surgeon, but at the same time gives the patient the certainty of keeping the function and hope for healing. Due to technical evolution, the recovery of osteoarticular post-resection tumor is today much more versatile and permissive, providing the comfort of the orthopedic oncologist surgeon during reconstruction and at the same time the patient satisfaction. Purpose of the paper. Short-term and medium-term evaluation of surgical treatment outcome of bone oncological pathogenesis of the knee with modular tumor prosthesis. Material and method. Recording based on the unique tumor registry of the Clinic in a monocentric, retrospective continuously study between 2009 and 2017, of all orthopedic oncology patients with malignant/ borderline tumors with metaphyso-epiphyseal knee periarticular involvement, beneficiaries of the resection-reconstruction with prosthesis modular tumor - a total of 21 cases. Case analysis included details of histopathological types of tumors, followed by Enneking staging, which was performed, alongside classical demographics. The Malaware oncological resection technique was followed and the learning curve and results of the prostatic modular prosthetic reconstruction were registered, considering failure for any of the following reasons: revision, necessity exhaustion of the prosthesis - infection, relapse, or amputation. The functional evaluation was based on the revised Muscular-skeletal Tumor Society Score (rMSTS). Results and discussions. Only one case of failure was registered - a periprosthetic infection. The overall rate of apparently postoperative complications followed the literature data for this type of intervention - 40-50%. Compared to amputation, the lower limb salvage process in the knee malignant tumors has proven to be cost-effective and has contributed to improving the quality of life, becoming one of the sustainable options for onco-surgical management in good cases selected. The limits of the study are determined by the relatively short duration of follow-up, and the apparently large number of complications is nevertheless included in the international statistics related to such interventions.
Maxilary Suppurative Inflammation on Chronic Treatment with Bisphosphonates for Bone Metastasis – A Case Report
Authors: Vrînceanu D. , Dumitru M. , Bănică B. , Nica A.
Published: May 2018

Introduction. Bisphosphonates represent a class of anti-resorbable bone care drugs that inhibit the function of active osteoclasts and reduce bone resorption. They are used in the Oncology and Hematology specialties as adjuvants in the treatment of osteolytic bone metastases and associate osteonecrosis of the maxillo-facial bones, most commonly of the mandible, as an adverse reaction. Material and method: case report. We present the case of a 65-years-old female patient, with breast cancer and bone metastasis, under chronic treatment with bisphosphonates. She presented a chronically odontogenic suppurative maxillary rhinosinusitis induced by maxillary post-extraction osteonecrosis on the background of bisphosphonate treatment and fistula in the upper right vestibule. Surgery under general anesthesia and sequestrectomy were performed. Discussion. The patient also associated coagulation disorders with mixed mechanism, adding an element of major surgical difficulty requiring a massive intraoperative transfusion with fresh refrigerated plasma to control hemostasis. Conclusions: The side effects of bisphosphonates used in the treatment of bone metastasis on the maxillofacial bones are significant. For this reason, the dental extraction in patients treated with bisphosphonates should be done with great caution and maxillary suppurative inflammation in post-extraction context in these patients should raise the suspicion of underlying bone necrosis.
Resection Reconstruction Versus Amputation in the Treatment of Malignant Tumors of the Limbs
Authors: Cristea Şt. , Popescu R. , Cuculici Şt. , Sava M. , Prundeanu A. , Groseanu F. , Georgeanu V. , Vișan R.
Published: May 2018

Partial or complete excision of the tumoral segment with preservation of the limb extremity in the treatment of tumors is an alternative to amputation. We present our cases with radical or wide resection and reconstruction with or without special prosthesis reconstruction. We used an evaluation and prognosis score, which included surgical stage, site of tumor, size of tumor, surgical margin, functional mobility, and activity level after surgery. Excision of the tumor with a wide margin, stable reconstruction and a good recovery is an alternative treatment to the amputation.
Management in Periacetabular Pelvic Chondrosarcoma
Authors: Cristea Şt. , Popescu R. , Cuculici Şt. , Sava M. , Vișan R. , Zamfir C.
Published: May 2018

The partial or complete excision of the hemipelvis with the sparing of the lower limb is an option of the treatment of pelvic chondrosarcomas and a therapeutic alternative of the interilio-abdominal disarticulation. The operation has the same indications as the interilio-abdominal disarticulation and offers a good solution for avoiding a mutilating operation. A giant periacetabular pelvic chondrosarcoma developed in Ennequin zone II and partial zone III, was resected and reconstructed with iliofemoral cooptation after complex investigations - pelvic X-ray, CT, MRI, Bioptic confirmation. The wide excision of the tumor, a stable reconstruction, and an efficient recovery are essential for a successful treatment of pelvic chondrosarcomas.
Surgical Treatment for Pulmonary Metastases of Osteosar-Coma
Authors: Rădulescu I.M.
Published: May 2018

Introduction. Osteosarcomas represent 40% of bone sarcomas and occur mainly in children and young adults. They are tumors with a high degree of pulmonary metastasis. Pulmonary metastases occur in about 80% of the relapsed patients after primary tumor therapy, whether or not they have received chemotherapy. As therapeutic solutions, both first intention resection of the metastasis and the post-chemotherapy resection or repeated resections in each relapse, represent satisfactory results with prolongation of survival. Material and method. The present study describes a group of 17 patients who were surgically treated for osteosarcoma with different localizations and who presented themselves in the thoracic surgery department during 2011-2016 with suspicion of pulmonary metastases. Three of them were at their second intervention for metastasis resection. Following investigations, 4 of them (23.5%) could not benefit from surgical resection of pulmonary metastases (lesional extension with postoperative vital risk or technical impossibility of metastatic excision). Surgical interventions were curative; lobectomies were performed in 4 cases (30.7%), atypical resections in 8 cases (61.6%) and one pneumonectomy (7.7%). Postoperative progression was favorable in all 13 patients. Discussions and conclusions. Surgical excision of osteosarcoma pulmonary metastases can prolong survival and sometimes even cure disease. In order to benefit from the intervention, the patient should be served by a thoracic surgery clinic in the shortest possible time after the discovery of the pulmonary nodules. Thus, the need for thoracic imaging is required in patients treated for osteosarcoma. Late presentation makes the intervention impossible, particularly because of the lesional extension in the lung parenchyma or the invasion of the adjacent structures, extension given by the number of metastases or their size.
Defect Reconstruction After Hip Tumor Resection - Our Clinical Experience
Authors: Muntean G.O. , Nica M. , Dumitrescu T.Ș.
Published: May 2018

Aim. Short and mid-term analysis of postoperative results after hip vicinity tumor resection and reconstruction with salvage of the lower limb. Material and method. Retrospective study on a number of 13 cases: 6 pelvis tumors, 3 femur tumors and 4 femur and pelvis tumors. 3 out of the total pelvis tumors were treated using custom pelvis reconstruction prosthesis, the other ones using bone graft and standard implants. The femoral tumors were treated using modular prosthesis and bone graft and osteosynthesis implants. Results. Short-term outcome was favorable. Conclusion. Bone defect reconstruction after hip vicinity tumor resection is a technically difficult procedure, which requires significant material resources. In terms of quality of life, the results are clearly superior compared to tumor resection with the sacrifice of the affected member.
Squamous Cell Carcinoma Developed in Chronic Osteomyelitis
Authors: Zaharia M.I. , Oproiu A.M. , Costache M. , Popescu D. , Dumitrescu N. , Varga A.
Published: May 2018

Introduction. Squamous cell carcinoma is the second as frequency in malignant tumors of the skin, representing 20% of this type of cancer. Inferior lip squamous carcinoma is most frequent, of 94%, because the trauma, sunburns, smoke and radiations are more frequent. Metastasis at distance in the area with chronic osteomyelitis is a rare situation. Material and method. A 78-year-old male, treated for inferior lip carcinoma, without any oncological treatment, was admitted in our clinic for a leg tumor on the anterior part, developed over a scar after osteomyelitis treated in the adolescence. The tumor growth was quick. We decided the treatment plan from the point of view of a multidisciplinary approach, plastic surgeon-orthopedistoncologist- dermatologist. A biopsy from the extraosseous tumor was performed and after the histological confirmation, the resection of the tumor block was made. For the confirmation of the bone invasion, we had to repeat the immunohistochemistry twice because the first result was negative. Until the final decision, the patient had an external fixation on the leg. A large tissue appeared on the area of resection, the aspect being suggestive for granulation. Amputation was decided after the complementary investigations and another biopsy from the granulation tissue. Results and conclusions. Squamous cell carcinoma of the lip needs prophylactic laterocervical ganglia resection for limiting metastasis.
Snake Robot Locomotion Patterns for Straight and Curved Pipe
Authors: Virgala Ivan , Lipták Tomáš , Miková Ľubica
Published: May 2018

In the paper the locomotion of snake robot is introduced considering locomotion in straight and curved pipe. For the straight pipe locomotion was designed traveling wave locomotion pattern with sine-like wave which expands from rear of the robot to its front. For the locomotion in curved pipe was designed approach which is based on inverse kinematic model including besides primary task also secondary tasks, namely kinematic singularities avoidance task, obstacle avoidance task and joint limit avoidance task. For final inverse kinematic model was used approach of weight matrices by which can be stated the priorities of particular tasks. Both case studies were tested by experimental snake robot in order to verify introduced methodology for locomotion in the straight and curved pipe.
Ubiquinone Plasma Levels are Correlated with Brain Natriuretic Peptide Plasma Levels in Patients with Chronic Heart Failure: The Potential of Coenzyme Q10 Combined Therapy
Authors: Sizova Zh.M. , Zakharova V.L. , Alibeyli K.A. , Medvedev O.S. , Shikh E.V. , Bolevich S.B. , Bolevich S.S. , Vorobyev S.I. , Votrin S.V. , Padalko V.V. , Novikov A.A. , Omarov I.A.
Published: May 2018

Despite the association of a worse HF-related clinical status with lower CoQ10 levels, the prognostic use of CoQ10 is controversial. The aim of this study is to optimize pharmacotherapy for patients with ischaemic CHF, based on the clinical and functional parameters of the heart and brain natriuretic peptide (BNP) plasma levels, which are correlated with the CoQ10 plasma levels, and to assess patient prognosis after receiving CoQ10 therapy. This prospective clinical study included 75 patients aged 56 to 63 years old with coronary heart disease (CHD) classified as class I–III according to the NYHA classification. After assessment of the clinical-instrumental characteristics of the CVD course (complaints, medical history, physical examination, a 6-minute walk test, echocardiography, and test for reactive hyperaemia), we determined the BNP level and CoQ10 plasma levels. At the same time, we assessed the efficacy of CoQ10 treatment (at a dose of 60 mg/per day) and tolerability in CVD-combined therapy during a follow-up of 12 weeks. CoQ10 supplementation in HF patients induced improvements in their functional cardiac parameters, such as the ejection fraction. Our results suggest that supplemental CoQ10 may be a useful option for effective management of heart failure and warrant future adequately powered randomized controlled trials of CoQ10 supplementation in patients with HF.
Action against smog at local government level in relation to urban public transport: evidence from selected Polish cities
Authors: Tomaszyk Mikołaj
Published: May 2018

All of us wish to breathe clean air. In recent years, a problem of growing importance is how to combat particulates which cause smog and are harmful to the human environment. International forums have adopted documents to prevent carpet emissions. As a result, public authorities in individual states have to tackle the tough challenge of implementing new regulations via their legal framework and administrative practice. The slogans “Clean Air” and “Right to Clean Air” trigger off grassroots movements which strive to coax the units of local government to take decisive action on a pro-ecological transport policy. While mindful of the influence of polluted air on human health, local interest groups have social control of authorities. The objectives of the article are to present the legal framework for the ‘smog alert’ and free public transport initiatives, and to analyse how local authorities have implemented free public transport, whether for all a city’s residents or just for the drivers who decide to forgo driving and have to show valid vehicle registration certificates to use public transport for free. The paper draws upon interviews and a critical review of substantive literature about the techniques for reducing smog. A scientific approach is adopted to the major body of work. Additionally, the analysis compares the pro-ecological activities of local governments in selected Polish cities. It focuses directly on the subjects managing public transport and the operators offering transport services.
STUDI PENGARUH REKONFIGURASI LOOP SCHEME TERHADAP KEANDALAN PENYULANG BLAHKIUH DAN PENYULANG PANGLAN
Authors: Yoga Bagus Widyananda , Arjana I Gede Dyana , Pemayun A.A Gede Maharta
Published: May 2018

Abstract—To improve reliability, the do loop system reconfiguration scheme to Blahkiuh feeders and feeders Panglan, by analyzing the calculation SAIFI and SAIDI, can the economy in terms of pressing / kWh minimize the number of unsold losses. Analysis of calculation results Blahkiuh feeders and feeder reconfiguration Panglan before result Blahkiuh feeder SAIFI 16.534 times/customers/year and the results SAIDI 35.894 hours/customer/year so the numbers of unsold kWh losses from the calculation not save 227,640.841 kWh energy equivalent to Rp 318,718,182.6, while for the results obtained Panglan feeder SAIFI 23.59 times/customer/year, the results of SAIDI 87.39 hours/ customer/year and the calculation results energy not save 238,037.099 kWh equivalent to Rp 364,672,835.7. After reconfiguration can minimize the number of SAIFI / SAIDI and losses, the results obtained Blahkiuh feeder SAIFI 2,089 times/ customers/year and the results SAIDI of 4.27 hours/customer/year, results energy not save 13369.314 kWh equivalent to Rp 20,481,733.86. For Panglan feeder SAIFI results obtained 1,218 times/customers/year and the results SAIDI 1,242 hours/ customer/year, results energy not save 3880.571 kWh equivalent to Rp 5,945,033.22.

 

Intisari— Untuk meningkatkan keandalan maka dilakukan rekonfigurasi sistem loop scheme pada penyulang Blahkiuh dan penyulang Panglan, dengan menganalisa perhitungan SAIFI dan SAIDI, ditinjau dari segi ekonomi mampukah menekan/ memperkecil angka kerugian kWh yang tidak terjual. Hasil Analisa perhitungan penyulang Blahkiuh dan penyulang Panglan sebelum rekonfigurasi diperoleh hasil SAIFI penyulang Blahkiuh 16,534 kali/pelanggan/tahun dan hasil SAIDI 35,894 jam/pelanggan/tahun sehingga angka kerugian kWh tidak terjual dari hasil perhitungan energy not save 227.640,841 kWh setara dengan Rp 318.718.182,6, sedangkan untuk penyulang Panglan diperoleh hasil SAIFI 23,59 kali/pelanggan/tahun, hasil SAIDI 87,39 jam/pelanggan/tahun dan hasil perhitungan energy not save 238.037,099 kWh setara dengan Rp 364.672.835,7. Setelah rekonfigurasi dapat memperkecil angka SAIFI/SAIDI dan kerugian yang dialami, pada penyulang Blahkiuh didapat hasil SAIFI 2,089 kali/pelanggan/tahun dan hasil SAIDI 4,27 jam/pelanggan/tahun, hasil energy not save 13.369,314 kWh setara dengan Rp 20.481.733,86. Untuk penyulang Panglan didapat hasil SAIFI 1,218 kali/pelanggan/tahun dan hasil SAIDI 1,242 jam/pelanggan/tahun, hasil energy not save 3.880,571 kWh setara dengan Rp 5.945.033,22.

 

Kata Kunci : Sistem radial, Loop scheme, SAIFI/SAIDI, Energy not save

[Turnitin Chek 12% 13042017]
Efektivitas Pesan Teks Dengan Cipher Substitusi, Vigenere Cipher, dan Cipher Transposisi
Authors: Maricar M. Azman , Sastra Nyoman Putra
Published: May 2018

Penelitian ini bertujuan untuk mengetahui efektivitas suatu keamanan pesan berbasis teks dengan metode kriptografi klasik seperti Substitusi, Vigenere, dan Transposisi. Dengan penerapan metode kriptografi, diharapkan mampu untuk meminimalisasi terjadinya penyadapan terhadap pesan teks. Ketiga metode tersebut, masing-masing akan di kombinasikan dan dibandingkan efektivitasnya berdasarkan ukuran file dan waktu proses. Terdapat tujuh kombinasi dari ketiga metode tersebut. Hasil pengujian efektivitas didapatkan hasil bahwa, ukuran file terbesar adalah kombinasi Substitusi, Vigenere, dan Transposisi yaitu 11 Kb, sedangkan yang terkecil adalah Substitusi dan juga Vigenere yaitu 5 Kb. Berdasarkan waktu proses terlama adalah  Substitusi, Vigenere, dan Transposisi yaitu 1.54 detik, sedangkan yang tercepat adalah Substitusi yaitu 0.37 detik. Dari seluruh kombinasi yang ada, seluruhnya berhasil untuk proses enkripsi dan dekripsi guna mengembalikan cipher text menjadi plain text yang asli.
Rancang Bangun Alat Otomatisasi Mantram Puja Trisandya Menggunakan Mikrokontroler ATMEGA328
Authors: Utama I Nengah Raka , Agung I Gusti Agung Putu Raka , Rahardjo Pratolo
Published: May 2018

Pengucapan Mantram Puja Trisandya dilaksanakan tiga kali sehari secara rutin oleh umat Hindu di Bali. Biasanya pengucapan  memakai peralatan Elektronika dilengkapi dengan pengeras suara dan dioperasikan oleh operator secara manual. Dengan Kemajuan teknologi, aktivitas ini bisa digantikan menggunakan timer RTC yang dikendalikan dengan mikrokontroler. Perancangan rangkaiannya meliputi :  Perancangan rangkaian mikrokontroler, Display, Mini MP3 Player, Keypad, Audio , dan Power Supply. Perancangan ini akan direalisasikan sehingga bisa dilakukan pengujian secara nyata. Alat ini berkerja secara otomatis dengan membandingkan jam sekarang dengan waktu pemutaran puja trisandya, apabila terjadi kecocokan data, maka mikrokontroler akan mengirimkan perintah kepada Mini MP3 Player untuk memutar file rekaman Mantram Puja Trisandya yang telah tersimpan pada mikro SD. Dari hasil penelitian didapat LCD (M1602A) mampu menampilkan huruf sesuai dengan kata-kata Mantram Puja Trisandya yang merupakan keluaran dari  Mini Mp3Player dengan  tepat  waktu. dimana seluruh rangkaian  dikendalikan dengan  mikrokontroler ATmega328.
OPTIMASILASI PEMASANGAN PANEL SOLAR HOME SYSTEM UNTUK KEHIDUPAN MASYARAKAT PEDESAAN DI BAN KUBU KARANGASEM
Authors: Nugraha I Made Aditya , Ridhana Pt Aries , Listuayu Kadek
Published: May 2018

Output daya dan energi suatu PLTS atau SHS dipengaruhi oleh beberapa faktor, antara lain temperatur, intesitas cahaya matahari, orientasi panel surya, sudut kemiringan panel surya, kecepatan angin dan keadaan atmosfer bumi. Dari enam sampel SHS di Desa Ban Kubu Karangasem dengan menggunakan Analisis Friedman, dan dilanjutkan dengan Uji Post Hoc Wilcoxon didapatkan hasil p < 0,001. Dari hasil tersebut dapat diketahui bahwa terdapat perbedaan yang bermakna untuk tegangan, arus, daya dan energi yang dihasilkan setiap SHS. Perbedaan ini menyebabkan energi listrik yang dihasilkan SHS juga berbeda, sehingga mempengaruhi kebutuhan energi listrik dan kehidupan masyarakat setiap hari. Untuk mengatasinya, maka untuk perencanaan dan pembangunan SHS untuk masyarakat pedesaan ke depannya lebih dioptimalkan sehingga energi yang dapat dinikmati oleh masyarakat lebih optimal dan berdaya guna
Authors: Setyadi I Wayan Adi , Khrisne Duman Care , Suyadnya I Made Arsa
Published: May 2018

Banyak dokumen yang dibagikan di Internet setiap harinya. Tidak semua teks dalam sebuah dokumen adalah informasi yang penting. Untuk mencari informasi dari dokumen yang banyak digunakan metode Information Retreival (IR). Penelitian di bidang Information Retreival (IR) sudah dilakukan sejak tahun 1950-an. Sistem temu kembali dokumen adalah sistem yang dapat mencari dokumen berdasarkan kata kunci, namun sistem temu kembali dokumen akan menemui kendala jika harus mencari informasi spesifik dari dokumen yang jumlahnya banyak dengan jumlah teks penyusun dokumen yang jumlahnya tidak sedikit. Automatic Text Summarization ini menggabungkan dua metode yaitu metode graph dan metode ant colony optimization serta menggunakan empat fitur kalimat. Empat fitur kalimat yang digunakan yaitu : kemiripan antar-kalimat, kalimat yang menyerupai judul dokumen TF-ISF dan TF-IDF. Pengujian yang dilakukan meliputi : pengujian hasil ringkasan sistem dengan hasil ringkasan manual mendapatkan hasil 76.3%, pengujian hasil ringkasan sistem dengan hasil ringkasan autosummary tools pada Microsoft Word mendapatkan hasil 68.15% dan pengujian hasil ringkasan sistem dengan hasil ringkasan ahli yaitu Guru SMA, mendapatkan hasil 78.43%. Hasil compression rate ringkasan sistem mendapatkan hasil 78.2%.
Analisa Biaya Penggunaan Bersama Jaringan Transmisi Kawasan BTDC Nusa Dua
Authors: Putra Mahadi , Giriantari Ida Ayu Dwi , Ariastina Wayan Gede
Published: May 2018

Di seluruh dunia deregulasi sektor bisnis listrik berubah dari suatu yang terpusat dan terintegrasi menjadi suatu industri tersegmentasi berdasarkan kompetensi para pelaku bisnis tersebut. Bentuk perdagangan baru dengan akses bebas pada saluran transmisi maupun distribusi telah mendorong suatu perdagangan kompetitif antar konsumen dan pemilik pembangkit. Pada lingkungan tersebut, jaringan transmisi dianggap sebagai faktor pokok dalam pasar listrik. Pemanfaatan transmisi perusahaan lain untuk menyalurkan tenaga listrik umumnya dikenal sebagai PBJT atau Wheeling Transaction. Istilah PBJT di Indonesia dikenal dengan Penggunaan Bersama Jaringan Transmisi. Ada beberapa metode yang digunakan untuk menghitung biaya sewa transmisi dalam paper ini digunakan dua perhitungan alokasi biaya yang memungkinkan untuk diaplikasikan pada sistem kelistrikan Bali yakni, metode Postage-Stamp Rate, metode MW-mile. Pada Paper ini, akan mengaplikasikan metode Postage Stamp Rate dan MW-mile dari Wheeling Transaction dengan tujuan untuk mendapatkan perhitungan biaya sewa transmisi yang dapat diterima oleh kedua belah pihak.

Keywords— Transmisi, PBJT, Wheeling Transaction, Postage-Stamp Rate, MW-mile
Desain Optimal Power System Stabilizer Pada System Kelistrikan Sulselrabar Menggunakan Bat Algorithm
Authors: Djalal Muhammad Ruswandi , Faisal Faisal
Published: May 2018

Masalah penggunaan Power System Stabilizer (PSS) pada eksitasi generator adalah bagaimana menentukan parameter PSS yang optimal. Untuk mengatasi masalah tersebut, penulis menggunakan metode cerdas berbasis algoritma kelelawar untuk mendesain PSS. Algoritma Kelelawar adalah algoritma yang bekerja berdasarkan perilaku kelelawar dalam mencari sumber makanan. Korelasi dengan penelitian ini adalah, sumber makanan yang dicari oleh kelelawar merepresentasikan sebagai parameter PSS yang akan dioptimasi. Algoritma kelelawar akan bekerja berdasarkan  fungsi tujuan yang sudah ditentukan, yaitu Integral Time Absolute Error (ITAE). Pada penelitian ini akan dilihat respon deviasi kecepatan dan sudut rotor setiap generator, bila terjadi gangguan di bakaru generator. Hasil analisa menunjukkan, sistem tanpa kontrol menghasilkan osilasi overshoot yang besar, dan setelah tambahan peralatan kontrol PSS osilasi tersebut dapat diredam. Sehingga overshoot dan settling time masing - masing generator dapat dikurangi dan generator dapat dengan cepat menuju ke kondisi steady state.
PENENTUAN HARGA JUAL OPSI BARRIER TIPE EROPA DENGAN METODE ANTITHETIC VARIATE PADA SIMULASI MONTE CARLO
Authors: PUTRI LUH HENA TERECIA WISMAWAN , DHARMAWAN KOMANG , SUMARJAYA I WAYAN
Published: May 2018

The purpose of this research is to compare the selling price of down and out barrier option when the prices are simulated by the Antithetic Variate Monte Carlo and the standar Monte Carlo. Barrier options are path dependent options and the payoff depend on whether the underlying asset price touched the barrier or not during the life of the option. In this research, we conducted simulations against the closing price of the shares of PT Adhi Karya using Standard Monte Carlo simulation and the Monte Carlo-Antithetic Variate simulation. After the simulation, we obtained that the option prices using Antithetic Variate produces a cheaper price than the standar one. We also found that the analytic solution has a smaller error on its confidence interval compare to the Monte Carlo Standar.
PENENTUAN HARGA PREMI ASURANSI PERTANIAN BERBASIS INDEKS CURAH HUJAN DENGAN MENGGUNAKAN METODE PEMBANGKIT DISTRIBUSI EKSPONENSIAL CAMPURAN
Authors: QOSIM SAYID , DHARMAWAN KOMANG , HARINI LUH PUTU IDA
Published: May 2018

Agricultural insurance is an insurance in agriculture sector that is relatively newly introduced in Indonesia. Agricultural insurance based on rainfall index is one of the risk management tool to keep farmers in case of crop failure. This study aims to determine the steps in determining the value of rainfall index on agricultural insurance and calculate the value of agricultural insurance premiums based on simulated rainfall index by Stochastic weather generator with mixed exponential distribution. The results of this study provide value if the amount of rainfall 103,71 mm so that the amount of premium payments equal to Rp19.016, and if the rainfall is high 128.35 mm then the amount of premium payment equal to Rp1.088.000.
Response level of some undergraduate programmes to Vietnam National Framework for Reference: A case study at Vietnam National University
Authors: Thi Hoai Tran , Huy Nghiem Xuan , Thuong Le Thi
Published: May 2018

Vietnam National Framework for Reference was delivered at decision number 1982/QĐ-TTg on 18 October 2016 signed by Prime Minister of Vietnam. Following this, programmes of higher education institutions were required reviewing and adjusting follow the Vietnam National Framework for Reference. Precisely, correlation between outcome standards, programme structure, building and developing steps of programme with capacity outcome standards in Vietnam National Framework for Reference, need to be researched and solved thoroughly to help higher education institutions plan adjusting and updating programme on current situation. This article shows a litterature review on national framework, outcome standards of undergraduate programmes; steps in developing undergraduate programmes; benchmarking of undergraduate programmes and Vietnam National Framework for Reference. Research data collected from surveying and evaluating undergraduate programme at Vietnam National University, Hanoi.

Key words:

National Framework for Reference, outcome standards, undergraduate programme.

References

1- Arjen Deij và các cộng sự, (2015), Global Inventory of Regional and National Qualifications Frameworks, Volume I: thematic chapters, UNESCO Institute for Lifelong Learning.2- Arjen Deij và các cộng sự, (2015), Global Inventory of Regional and National Qualifications Frameworks, Volume II: National and Regional Cases, UNESCO Institute for Lifelong Learning.3- Cedefop, (2017), European qualifications framework (EQF).4- The ASEAN Qualifications Reference Framework (AQRF), (2nd, 2015)5- Teresita r. Manzala, (2013), the Asean qualifications reference framework (AQRF)6- Chính phủ, Khung trình độ quốc gia Việt Nam, (2016), Quyết định số 1982/QĐ-TTg ngày 18 tháng 10 năm 2016 của Thủ tướng Chính phủ.7- Phạm Thị Minh Hiền, (2016), Tổng quan về Khung trình độ quốc gia, tạp chí Lao động và Xã hội số 535 từ tr.16 – tr.30, 9/20168- Nguyễn Đức Chính, (2017), Phát triển chương trình giáo dục, NXB Đại học Quốc gia Hà Nội.9- Đại học Quốc gia Hà Nội, (2010), Hướng dẫn xây dựng và hoàn thiện chương trình đào tạo theo chuẩn đầu ra ở Đại học Quốc gia Hà Nội, ban hành theo công văn số 3109/HD-ĐHQGHN ngày 29 tháng 10 năm 2010.10 - Viện Đảm bảo chất lượng giáo dục, (2017), Báo cáo tình hình khảo sát việc
Heritability of Growth Traits of Simmental Cattle in Balai Pembibitan Ternak Unggul-Hijauan Pakan Ternak (BPTU-HPT), Padang Mengatas, West Sumatra, Indonesia
Authors: Putra D. E. , Sarbaini Sarbaini , Afriani T. , Suhada H. , Arlina F.
Published: May 2018

This study is proposed to determine the heritability of growth traits of Simmental cattle in BPTU-HPT Padang Mengatas, West Sumatra. Data were collected by observations and measurements of the cattle in the field, completed by the secondary data from BPTU-HPT recorded from 2010 to 2016. Data for heritability were collected from 455 offsprings belonged to 15 sires. Weight and body size are two parameters used to estimate the heritability and breeding value, the heritability was analyzed between weaning and yearling age and breeding value was only calculated for weaning age. The data were analyzed by using paternal half-sib correlation method. The heritability between bulls and offspring was varied in weaning age, ranged from 0.24 to 0.97, and yearling age was showed high heritability in all parameters, ranged from 0.56 to 0.64. The heritability of weaning weight was 0.50 ± 0.19, weaning body size (shoulder height, body length and heart girth) was 0.97 ± 0.31; 0.24 ± 0.13; 0.44 ± 0.19, yearling weight was 0.56 ± 0.08 and yearling body size was 0.58 ± 0.08; 0.64 ± 0.09 and 0.56 ± 0.08 respectively. This result found that the highest heritability was shoulder height and the lowest heritability was body length. Relative breeding value above 0 represented by six sires with the highest breeding value was 37.12. Sires with the highest BV can be selected for future breeding in BPTU-HPT Padang Mengatas, while the lowest BV is recommended to be culled.
Halaman Belakang JPI Vol 20 No 1 Februari 2018
Authors: Indonesia Jurnal Peternakan
Published: May 2018

Halaman Belakang JPI Vol 20 No 1 Februari 2018