bluuebunny/crossref_metadata_2025 huggingface dataset:
Control and capacity planning for energy storage systems to enhance the stability of renewable generation under weak grids
Authors: Guo Zixuan , Zhang Xing , Li Ming , Wang Hanyu , Han Feng , Fu Xinxin , Wang Jilei
Published: February 2022

Current‐controlled inverters (CCIs), often used in renewable power generation, are prone to harmonic instability under weak grids with a low short‐circuit ratio (SCR). This paper proposes that this type of instability can be prevented by configuring part of the energy storage system (ESS) converters in the distribution network as voltage‐controlled inverters (VCIs). The main contributions of this paper are as follows: (1) A model of the CCI/VCI hybrid grid‐connected system is established, which can characterize not only the plant‐level stability, but also the unit‐level stability. (2) A rapid power control method for VCIs is proposed, which can improve the power control bandwidth of VCIs to tens of Hz to meet the rapidity requirements for ESS power control. (3) A capacity planning method is proposed, which can give the required minimum VCI/ESS capacity for a specific stability margin and SCR range. Analysis shows that as long as the ESS converters with a capacity of no less than 6% of the CCIs are configured as VCIs, large‐scale CCIs that are originally critically stable at SCR = 1.9 can operate stably under the very weak grid with SCR = 1.2. Finally, the proposed method is verified by simulations and experiments.
Micro- and millimeter-wave spectra of five conformers of cysteamine and their interstellar search
Authors: Song Wentao , Maris Assimo , Rivilla Víctor M. , Fortuna Francesca , Evangelisti Luca , Lv Dingding , Rodríguez-Almeida Lucas , Jiménez-Serra Izaskun , Martín-Pintado Jesús , Melandri Sonia
Published: February 2022

Context. Cysteamine (NH2CH2CH2SH), a molecule of potential astrobiological interest, has not yet been detected in the interstellar medium. Furthermore, the sulfur- stituted isomer of ethanolamine (or 2-aminoethanol) has been recently detected in the molecular cloud G+0.693–0.027.

Aims. In order to conduct a new interstellar search for cysteamine in the molecular cloud G+0.693–0.027, its pure rotational spectrum needs to be investigated in the laboratory.

Methods. A pulsed-jet Fourier transform microwave spectrometer and a Stark-modulated free-jet millimeter-wave absorption spectrometer were used to measure the purely rotational spectrum of cysteamine in the range of 6.5-18 GHz (46.12–16.66 mm) and 59.6–120.0 GHz (5.03–2.72 mm), respectively. We used a deep spectral line survey toward the molecular cloud G+0.693-0.027 obtained with the IRAM 30 m and Yebes 40 m radiotelescopes to search for cysteamine.

Results. We assigned 815 rotational transition lines of five conformers (gGt, gGg, g′Gg, g′Gg′, and g'Gt) to fit the rotational constants, quartic centrifugal distortion constants, and the 14N nuclear quadrupole coupling constants. For four conformers (gGt, gGg, g′Gg, and g′Gg′), the 34S isotopologs were observed, and for two of them (gGg and g'Gg), the 13C and 15N isotopolog spectra were also detected; all in natural abundance. The five conformers of cysteamine were not detected toward the G+0.693–0.027 molecular cloud. We derived upper limits for their molecular abundances compared to molecular hydrogen of <(0.2–1.3) × 10–10. The relative abundances with respect to the oxygen counterpart ethanolamine, previously detected toward this cloud, are NH2CH2CH2OH/NH2CH2CH2SH > 0.8–5.3.
Fibro-ossärer Pseudotumor der ersten Kommissur – ein interessanter Fall
Authors: Fellmann Adrian , Calcagni Maurizio , Besmens Inga Swantje
Published: February 2022

Fallbericht

Ein 52-jähriger Patient stellte sich nach Zuweisung durch seinen Hausarzt aufgrund einer schmerzhaften, größenprogredienten Schwellung in der ersten Kommissur seiner linken adominanten Hand in der handchirurgischen Sprechstunde vor. Er gab an, die Schwellung vor fünf Wochen erstmals bemerkt zu haben und dass sie zunehmend schmerzhaft und funktionell einschränkend sei. Ein aktuell auslösendes Trauma wurde verneint; allerdings habe er sich vor drei Jahren bei einem Fahrradsturz im Bereich der betroffenen 1. Kommissur verletzt. Die Familienanamnese war bzgl. maligner Erkrankungen blande.
Erhöhtes Alter, kardiovaskuläre Nebenerkrankungen, COPD und Diabetes mellitus bedingen eine Übersterblichkeit in der septischen Unfallchirurgie
Authors: Maurer Elke , Wallmeier Vera , Reumann Marie , Ehnert Sabrina , Ihle Christoph , Schreiner Anna J , Flesch Ingo , Stollhof Laura Emine , Histing Tina , Nüssler Andreas K
Published: February 2022

Hintergrund Die konstante Überalterung der Bevölkerung in Deutschland führt u.a. zu einer Zunahme des durchschnittlichen Alters hospitalisierter Patienten. Hiermit einher gehen
eine reduzierte physiologische Reserve und ein reduzierter körpereigener Abwehrmechanismus und folglich eine gesteigerte Infekt- und Komplikationsanfälligkeit. Die Altersentwicklung der
septischen Unfallchirurgie ist im Vergleich zur Unfallchirurgie wenig erforscht. Zudem ist der Einfluss des Alters, verschiedener Vorerkrankungen, aber auch der des Alkohol- und
Nikotinkonsums auf die Mortalität in der septischen Unfallchirurgie unzureichend untersucht.

Methode 2014/15 (Exam1) wurden 345 Patienten der septischen Unfallchirurgie in die Studie eingeschlossen. 2017/18 (Exam2) erfolgte das 3-Jahres-Follow-up. Die Befragungen (Exam1
und 2) umfassten demografische Parameter, Nebenerkrankungen, die Medikamenteneinnahme, Alkohol- und Nikotinkonsum sowie verschiedene Parameter zur Morbidität. Hieraus wurde das
Sterberisiko in der septischen Unfallchirurgie in Abhängigkeit von den verschiedenen Risikofaktoren (Alter, Nebenerkrankungen, Medikamenteneinnahme und Noxen) berechnet. Zudem wurde die
Entwicklung des Patientenalters in der Unfallchirurgie sowie speziell in der septischen Unfallchirurgie zwischen 2010 und 2019 ausgewertet.

Ergebnisse 2014/15 (Exam1) wurden 345 Patienten in die Studie eingeschlossen. Hiervon konnten 2017/18 274 (79,4%) telefonisch erreicht werden. 36 (10,4%) lehnten eine Nachbefragung
ab. 20 (8,4%) der 238 verbleibenden Probanden waren bereits verstorben, 218 (63,2%) nahmen erneut teil. Zwischen 2010 (n = 492) und 2019 (n = 885) nahm die Patientenzahl der septischen
Unfallchirurgie in unserer Abteilung um 79,9% zu, wobei besonders der Anteil der unter 65-Jährigen anstieg. Ab dem 60. Lebensjahr stieg die Sterbewahrscheinlichkeit (60. Lj: 0,0377 vs. 70.
Lj: 0,1395) sprunghaft an; wobei in der septischen Unfallchirurgie die eines 60-Jährigen der Sterbewahrscheinlichkeit eines 80-Jährigen der Normalbevölkerung entsprach. Nikotin- (p = 0,93)
und Alkoholkonsum (p = 0,344) zeigten keinen signifikanten Einfluss auf die Sterblichkeit, während kardiale Vorerkrankungen (p = 0,01), die COPD (p = 0,01), der Diabetes mellitus
(p = 0,05) und die pAVK (p = 0,01) mit einer signifikant erhöhten Sterblichkeit einhergingen.

Schlussfolgerung Das Alter, kardiale Vorerkrankungen, aber auch die COPD, der Diabetes mellitus und die periphere arterielle Verschlusskrankheit gehen mit einer signifikant
erhöhten Sterblichkeit in der septischen Unfallchirurgie einher. Eine exponentielle Zunahme des Sterblichkeitsrisikos besteht zwischen dem 50. und 60. Lebensjahr, wobei das Risiko zu
versterben eines 60-jährigen Patienten der septischen Unfallchirurgie dem eines 80-jährigen aus der Normalbevölkerung entspricht.
Usefulness of endoscopic ultrasound in children with pancreatobiliary and gastrointestinal symptoms
Authors: Dalal Ankit , Kamat Nagesh , Patil Gaurav , Daftary Rajen , Maydeo Amit
Published: February 2022

Background and study aims Endoscopic ultrasound (EUS) is useful in diagnosing and treating childhood pancreatobiliary and gastrointestinal diseases. However, there are limited data on its effectiveness for various indications.

Patients and methods This was a retrospective analysis of prospectively collected data of patients who underwent EUS for upper gastrointestinal tract disorders from January 2018 to December 2020 to assess its indications, findings, interventions, and complications.

Results Ninety-two procedures were performed in 85 children, (70.5 % male; mean [SD] age 12.1 years [3.9] years) with a mean (SD) symptom duration of 1.1 (0.5) years. The procedures were technically successful in all patients. The primary indication for EUS was abdominal pain in 45(52.9%) and jaundice/cholangitis in 15 patients (17.6 %). General anesthesia was used in 12 (13 %) and TIVA in 80 patients (87 %). The most common diagnostic findings were choledocholithiasis in 21 (24.7 %) and cholelithiasis in 12 patients (14.1 %). Among interventions, EUS-guided cystogastrostomy for pancreatic pseudocyst was done in four patients (4.7 %), and EUS-guided rendezvous for failed ERCP in one patient (1.2 %) with cholangitis. There were no immediate post-procedural complications. Overall, EUS had a meaningful impact on the subsequent clinical management in 69 cases (81.2 %).

Conclusions EUS in the pediatric population is safe, effective, and has a meaningful impact in appropriately selected cases. It can act as a rescue in major therapeutic procedures, but adequate care should be taken at the procedural level and during anesthesia.
Sprunggelenk-Instabilität: Wie unterscheide ich mechanisch von funktionell?
Authors: Wenning Markus , Schmal Hagen
Published: February 2022

Die chronische Sprunggelenkinstabilität lässt sich grundlegend in 3 Komponenten unterteilen, die interagieren: die mechanische Instabilität, die funktionelle Instabilität und die
subjektive Instabilität. Die bestmögliche Therapieempfehlung muss die dominierende Ätiologie sowie das Zusammenspiel zwischen mechanischer und funktioneller Komponente berücksichtigen.
Hierzu bedarf es einer adäquaten Diagnostik, auch wenn die quantitative Diagnostik der mechanischen Instabilität weiterhin eine Herausforderung darstellt. Zu den diagnostischen Optionen
zählen für die Mechanik die klinische Untersuchung, die jedoch keine Einteilung in Schweregrade erlaubt. Weiterhin bilden die Stress-Sonografie, das 3-D-Stress-MRT (3SAM), die
Arthrometrie, je nach Fragestellung die markerbasierte Bewegungsanalyse und die diagnostische Sprunggelenkarthroskopie das Portfolio der diagnostischen Möglichkeiten. Letztere ist aktuell
der anerkannte Goldstandard, auch wenn eine rein diagnostische Arthroskopie nicht indiziert ist, es sich um ein invasives Verfahren handelt und diese ebenso wenig wie die klinische
Untersuchung eine Bemessung der Instabilität erlaubt. Zur funktionellen Diagnostik gehören der Star Excursion Balance Test, die Posturografie/Stabilometrie, die Gang-/Laufanalyse, die
EMG-Analyse (EMG: Elektromyografie) in der dynamischen Untersuchung und die isokinetische Kraftmessung.

Die Standardtherapie ist die konservative Behandlung mithilfe von sensomotorischem Training, Kräftigung der gelenkumgreifenden Muskulatur sowie der unteren Extremität,
Gleichgewichtstraining mit Gang- und Laufschule auf unterschiedlichen Untergründen. Jedoch wird zunehmend klar, dass ein gewisser Grad mechanischer Insuffizienz nicht durch funktionelles
Training kompensiert werden kann. Es ist das Ziel der differenzierten Diagnostik, diese Patienten/-innen zu identifizieren und für diese die richtige mechanische Therapie zu indizieren
bspw. Tapeverbände, Sprunggelenkorthesen oder operative Bandrekonstruktion.
How We Use Immunohistochemistry to Arrive at a Diagnosis in Breast Lesions
Authors: Sahay Ayushi , Patil Asawari , Desai Sangeeta B.
Published: February 2022

Immunohistochemistry (IHC) is an essential tool available to pathologists for facilitating diagnosis and as well as guiding the prognosis of breast lesions. Newer markers are increasingly being added to the pathologists' armamentarium. However, the selection and interpretation of the IHC markers should be judicious. In light of an appropriate morphological assessment, they should complement each other and produce accurate reports. We have briefly outlined here the immunohistochemical approach used in the diagnosis and management of breast cancers at our tertiary care cancer center.
Idiopathic Toe-Walking: A Review from 1967 to 2021
Authors: Sala Debra A.
Published: February 2022

Idiopathic toe-walking (ITW) is considered a diagnosis of exclusion for which no underlying neurological, neuromuscular, neurodevelopmental, or orthopedic condition can be identified. The purpose of this review was to examine multiple aspects of ITW: natural history, evaluation, treatment, musculoskeletal manifestations, and developmental issues through the review of studies from the initial description of condition in 1967 to the present. From a PubMed search and review of reference lists of individual articles, 64 articles were selected and reviewed. The studied samples were variably described and often not well-defined. Gait analysis found gait characteristics associated with ITW that varied from normal. Children with ITW can be differentiated from children with cerebral palsy on the basis of several gait pattern features, but findings from electromyographic comparisons were variable. Treatments included orthoses, casting, botulinum toxin type A, and surgery. The evidence to support any specific treatment is limited by the small sample size and short duration of follow-up in the majority of studies. The inadequacy of the current literature suggests the need for a longitudinal multi-center study to more clearly define the population of children with ITW and to determine indications, timing, and effectiveness of the various available treatments.
A Radiologist's Perspective on Treatment-Related Pseudoprogression: Clues and Hues
Authors: Chakrabarty Nivedita , Mahajan Abhishek , Baheti Akshay D. , Choudhari Amit , Patil Vasundhara , Popat Palak , Unde Himangi
Published: February 2022

Pseudoprogression refers to the initial apparent increase in tumor burden observed on imaging after cancer therapy, with subsequent delayed response to the same treatment, thus giving a false initial appearance of disease progression. It is essential to differentiate pseudoprogression from true progression to prevent the patients from getting deprived of the benefits of their ongoing cancer therapy owing to their early withdrawal. It also affects their recruitment for clinical trials. Pseudoprogression, albeit uncommon, has been observed after various types of cancer therapy; however, this phenomenon has gained momentum of late due to the emergence of immunotherapy for the treatment of various malignancies. Besides immunotherapy, pseudoprogression has predominantly been of concern in a few patients after radiation therapy for brain tumors and metastasis, after molecular targeted therapy for a variety of tumors, and after chemotherapy in metastatic bone lesions. This article reviews the available data on imaging of pseudoprogression from various types of cancer therapies, highlighting ways to suspect or identify it on imaging.
Physiotherapeutic Approaches to Treat Anal Incontinence in Women after Obstetric Trauma
Authors: Freitas Mayanna Machado , Moura Lara Elma Franco , Saquetto Denise , Rodrigues Iane Castro , Carvalho Valéria Conceição Passos de , Uchôa Silvana Maria Macedo
Published: February 2022

Introduction Anal incontinence is defined as the loss of voluntary control of fecal matter or gases with a recurrence period longer than 3 months in individuals aged ≥ 4 years; it has a female predominance. Among the treatment modalities is pelvic physiotherapy, the second line of treatment, which promotes the reeducation, coordination, and strengthening of the muscles of the pelvic floor to enable patients to return to their regular activities of daily living.

Objective To perform a systematic review on the physiotherapeutic treatments used in women between the ages of 18 and 65 years with a diagnosis of anal incontinence.

Material and methods Clinical studies written in Portuguese, Spanish and English were searched on the the following databases: Science Direct, Medical Literature Analysis and Retrieval System Online (Medline) via PubMed, Physiotherapy Evidence Database (PEDro), Scientific Electronic Library Online (SciELO), and Scopus.

Results Of the 998 articles found, only 4 studies met the inclusion criteria of the present systematic review. The physiotherapeutic approaches to treat women with anal incontinence are biofeedback, Kegel exercises, electrostimulation, and training of the pelvic floor muscles. The average score on the PEDro scale was of 6.25, which indicates that the methodological quality was good.

Conclusion Although pelvic physiotherapy is effective to treat anal incontinence, it must be promoted through the performance of evidence-based scientific research.
Ablative Volume of Radiofrequency Ablation Related to Intrahepatic Recurrence-Free Survival of Hepatocellular Carcinoma
Authors: Inmutto Nakarin , Thaimai Siripong , Srisuwan Tanop , Kattipathanapong Thanate , Nimitrungtawee Natthaphong
Published: February 2022

Purpose The aim of this study was to evaluate intrahepatic recurrence-free survival of hepatocellular carcinoma (HCC) after Radiofrequency ablation (RFA)

Methods A retrospective cohort study of single HCC treated by RFA between 2015 and 2017. Fifty patients were enrolled in the study. Tumor volume and ablative volume were measured by using Syngo.via application (Siemen Healthineers, United States). Ablative volume classified into small and large ablative volumes. Ablative margin was evaluated by visual comparison between pre- and post-RFA images and classified into two groups: closed ablative margin (<0.5cm) and large ablative margin (>0.5 cm). The recurrence tumor was classified as local tumor progression (LTP) and intrahepatic distant recurrence (IDR). The recurrence-free survival rate and independent risk for tumor recurrence were analyzed.

Results Recurrence-free survival rate at the first, second, third, and fourth year after RFA was 83, 56, 44, and 44%, respectively. The average recurrence-free survival time in large ablative volume group was significantly longer than small ablative volume group (31.57 vs. 8.50 months, p = 0.003). A significant independent risk factor for tumor recurrence was large ablative volume (hazard ratio = 0.12, 95% confidence interval = 0.02–0.84, p = 0.033). The IDR group had ratio of actual ablative volume by ideal ablative volume (ablative ratio) higher than LTP group and nonrecurrent group.

Conclusion The large ablative volume prevented tumor recurrence and increased recurrence-free survival rate. But aggressive ablation with high ablative volume ratio could increase risk of IDR.
Double Trouble: Stroke in a Child with Down's Syndrome
Authors: Reading Jacob , Bhatt Ree'Thee , Kilbey Laura , Breene Richard , Hall Georgina , Kavirayani Akhila , Joseph Robin , Ramdas Sithara
Published: February 2022

Down's syndrome (trisomy 21) is well recognized to be associated with several autoimmune conditions such as hypothyroidism, celiac disease, and diabetes mellitus. Antiphospholipid syndrome (APS), an immune disorder, can cause a stroke due to the prothrombotic state. APS is associated with several autoimmune diseases including systemic lupus erythematosus, rheumatoid arthritis, and systemic vasculitis, as well as Down's syndrome. Down's syndrome is linked to several other risk factors for stroke including congenital heart disease, moyamoya disease, and arterial dissection. We present the case of a 3-year-old girl child patient with Down's syndrome, who presented with an acute arterial ischemic stroke secondary to carotid artery dissection and subsequently was also confirmed to have APS. We review the literature on Down's syndrome and APS, the proposed pathophysiology, and management strategies. We present a case of a 3-year-old girl with Down's syndrome and who presented with stroke, review previously published cases, and discuss the conditions and their management. Autoimmune conditions, such as antiphospholipid syndrome, are more common in individuals with Down's syndrome, and as such should be investigated when these children present with symptoms suggestive of stroke.
A Challenging Case of Postcholecystectomy Pseudoaneurysm at an Uncommon Location
Authors: Choudhary Shayeri Roy , Bhujade Harish , Gupta Pankaj , Singh Harjeet , Kalra Naveen , Kang Mandeep
Published: February 2022

Hepatic artery pseudoaneurysm in postcholecystectomy choleduodenal fistula is an extremely rare but clinically significant complication. A 52-year-old male presented with hematemesis and melena several weeks after open cholecystectomy for complicated gallstone disease. Upper gastrointestinal endoscopy revealed bleeding from the choledochoduodenal fistula site. On computed tomography angiography, a small right hepatic artery pseudoaneurysm close to fistula site was identified. Endovascular embolization failed due to nonopacification of the proximal right hepatic artery. Endoscopic ultrasound-guided embolization was also unsuccessful due to the small size of the aneurysm and inadequate visualization. Following this, percutaneous n-butyl cyanoacrylate glue was successfully injected into the pseudoaneurysm. The patient recovered and was planned for hepaticojejunostomy to restore biliary continuity.
Gravity models do not explain, and cannot predict, international migration dynamics
Authors: Beyer Robert M. , Schewe Jacob , Lotze-Campen Hermann
Published: February 2022

The major social and economic impacts of international migration have led to a strong interest in better understanding the drivers of cross-border movement. Quantitative models have sought to explain global migration patterns in terms of economic, social, climatic, and other variables, and future projections of these variables are increasingly being used to forecast international migration flows. An important implicit assumption in the most widely used class of these approaches, so-called gravity models, is that their parameterisation based on panel data enables them to describe the effects of predictor variables on migration flows across both space and time, i.e., that they explain flow variation both across country pairs at a given time and across time for a given country pair. Here we show that this assumption does not hold. Whilst gravity models describe spatial patterns of international migration very well, they fail to capture even basic temporal dynamics, indeed, often worse than even the time-invariant average of the historical flows. We show that standard validation techniques have been unable to detect this important limitation of gravity models due to the different orders of magnitude of migration flows across spatial corridors, on the one hand, and over time, on the other hand. Our analysis suggests that gravity-model-based inferences about the effects that certain variables have had, or will have, on international migration over time may in reality represent statistical artefacts rather than true mechanisms. We argue that future predictions based on gravity models lack statistical support and that, in its current form, this class of models is not suited for informing policy makers about migration trajectories in the coming years and decades.
Central extensions and the Riemann-Roch theorem on algebraic surfaces
Authors: Osipov Denis Vasilievich
Published: February 2022

We study canonical central extensions of the general linear group over the ring of adeles on a smooth projective algebraic surface $X$ by means of the group of integers. Via these central extensions and the adelic transition matrices of a rank $n$ locally free sheaf of $\mathcal{O}_X$-modules we obtain a local (adelic) decomposition for the difference of Euler characteristics of this sheaf and the sheaf $\mathcal{O}_X^n$. Two distinct calculations of this difference lead to the Riemann-Roch theorem on $X$ (without Noether's formula).
Bibliography: 21 titles.
Does the Linguistic Landscape influence happiness?
Authors: Malloy Connor
Published: February 2022

This paper investigates the potential relationship between multilingual landscapes and minority speech community members’ sense of subjective well-being. It focuses on three speech communities located in Germany: Chinese, Japanese, and Turkish. Drawing on interviews with members of these speech communities, it analyzes how individuals perceive their engagement with public displays of their language in terms of happiness and in the context of the host society. Integration, which is prominent in both Happiness studies and Linguistic Landscape research, is identified as a key theme influencing the emotional interaction between signs and sign readers. The paper’s aim is to integrate a subject-focused approach into the study of Linguistic Landscapes that can better address how individuals perceive and interact with language signs in multilingual and multi-ethnic settings.
Voice evaluation – contribution of the speech-language pathologist voice specialist – SLP-V
Authors: Behlau Mara , Madazio Glaucya , Vaiano Thays , Pacheco Claudia , Badaró Flávia
Published: February 2022

This article describes the contribution of the speech-language pathologist, voice specialist SLP-V in the assessment of patients with voice problems. Part B explores acoustic analysis to measure the vocal signal and to produce comprehensive documentation of the patient; the physical examination to assess the involvement of body tension, including the larynx, cervical muscles, and breathing pattern; and finally, the correlation of all previously described steps to make a clinical decision combining the patient information, tests performed, and the physical examination of the individual. Worldwide published tendencies and specific comments of each step highlight the role of the SLP-V.
Intercropping patterns effect of cardamom and cayenne pepper on population and intensity of whitefly pest’s attacks (Bemisia tabaci)
Authors: Erdiansyah I , Eliyatiningsih E , Sari V K , Nurahmanto D , Prayitno A H
Published: February 2022

The study aimed to determine the population and intensity of attacks caused by whitefly pests on intercropping and monoculture cultivation areas. This research was conducted from June to August 2021 in Pace Village, Silo District, Jember Regency. The method used is to compare two intercropping and monoculture cultivation areas of medicinal plants cardamom - cayenne pepper. The first plot was cultivated in monoculture with pest control using an insecticide with the active ingredient Alfametrin 15 EC, while in the second plot, cayenne pepper - cardamom intercropped cultivation with a spacing of 1x2 meters and pest control without pesticides. A systematic random sampling of 50 plants in both cropping patterns on cultivated land. Observation of pest populations using insect nets, pitfall traps, and insect suction in the field. The data were analyzed using SPSS version 15.0. The data were tested for normality using Kosmorogrof Smirnov with non-parametric analysis. The results showed that the whitefly population in monoculture cayenne pepper cultivation had a higher average of 57.58 individuals, while in cayenne-cardamom intercropping cultivation, the population average was 51.00 and showed significantly different results. The intensity of whitefly attack showed significantly different results in monoculture cultivation of 45.58% while intercropping pattern of 50.10%.
The fortification effect of duck eggshell nano-calcium on the physical quality of beef sausage
Authors: Prayitno AH , Rukmi DL , Widiyawati A , Prasetyo B
Published: February 2022

This research was aimed the fortification effect of duck eggshell nano-calcium on the physical quality of beef sausage. The materials include beef, duck eggshell nano-calcium, tapioca, soy protein isolate, palm oil, salt, pepper, garlic, onion, shallot, coriander, nutmeg, sugar, frankfurter, sodium tripolyphosphate, monosodium glutamate, and ice. The treatments for fortification of duck eggshell nano-calcium were 0; 0.15; 0.3; 0.45; and 0.6% of the total dough. The parameters tested were pH value, water holding capacity, tenderness, and water activity. The physical quality data were analyzed by analysis of variance and if there was a significant difference (P<0.05) then further tested with Duncan’s New Multiple Range Test. The results showed that the fortification of duck eggshell nano-calcium had a significant effect (P<0.05) on the pH value, water holding capacity, tenderness, and water activity of beef sausage. Fortification of duck eggshell nano calcium up to 0.6% can increase the value of pH, tenderness, water activity, and decrease water holding capacity.
Early production performance of crossing chickens raised on indoor or with outdoor access
Authors: Hertamawati R T , Prasetyo B , Suryadi U
Published: February 2022

An experiment was conducted to determine the effect of the rearing system and feed on early growth performance of crossing chicken (male local chicken x female Isa Brown final stock laying chicken). One hundred 1-d-old chicks were randomly assigned to 2 factor treatments, the first factor was rearing cages (indoor and outdoor access) and the second factor was feed ration (20% and 17% crude protein). In the indoor treatment, the chickens were housed in floor pens (5 birds/m2). In the outdoor access treatment, the chickens were housed in a similar indoor house; in addition, they also had an outdoor grass paddock (5 birds/m2). All birds were provided ad libitum water and were raised from 14 to 35 days of age. The results showed that early production performance (average daily gain, feed intake and feed conversion ratio) were different among treatment (P>0.05) at 28 and 35 days. The early growth performance of crossing chicken between Bangkok chicken and layer chicken have good performance in the indoor or outdoor cages with nutritional content of 20% crude protein and energy metabolize 2900 kcal/kg
Effect of Low Grade Vegetable Soybean on Performance of Days Old Broiler Chicken
Authors: Nusantoro S , Andriani M , Nurkholis
Published: February 2022

This experiment aimed to examine the effect of low grade vegetable soybean (LGS) via drinking water on performance of days old chicken. Two hundreds day old boiler chicken (unsexed) were randomly assigned into completely randomized design, using 4 treatments (Non=0% LGS, Vit=vitamin, LG5=5% LGS, and LG10=10%LGS solution) and 5 replication. Data were collected from day-1 until day-7. LGS significantly (p<0.05) affected final body weight and weight gain of broiler chicken not feed conversion ratio (p>0.05). The results showed that LGS of 10% can be applied via drinking water to improve performance during initial phase of broiler chicken rearing period.
Early growing performance of local male weaning lambs fed edamame pod-based rations with and without exogenous enzyme additives
Authors: Kustiawan E , Nusantoro S , Andriani M , Syahniar TM
Published: February 2022

This study aimed to evaluate the early growing performance of local male weaning lambs fed edamame pod-based rations with and without exogenous enzyme additives. Nine local male weaning lambs with initial weight about 16.88±2.33 kg/head were randomly assigned into into 3 levels treatment using an experimental completely randomized design (CRD). Every single level treatment was repeated 3 times. The levels treatment was 0% (control), 0.14% (w/w), and 0.28% (w/w) of exogenous enzyme addition into edamame pod-based rations. The lambs were maintained in individual pen which fed and given drinking water ad libitum. The parameters observed were nutrients consumption, liveweight gain, and gain to feed ratio during the first couple week maintenance with 2 weeks adaptation period. Data obtained were analysis using analysis of variance and further tested by DMRT for different result. The result presented that nutrient consumption, daily gain and gain to feed ratio were not affected (P>0.05) by various levels of exogenous enzyme additions. Thereby, it was concluded that the addition of exogenous enzyme up to 0.28% w/w potentially improved the nutrient consumptions and productivity performance of local male weaning lambs.
Raspberry Pi based crop and weed classification using Machine Learning Algorithm
Authors: Joshitha K L , Nishanthini S , Harshini B J , Sadhana T
Published: February 2022

Farming with fun has uplifted the agritourism in our country. The technological development and support have made farming a passion nowadays. Farming is not only important to cater the needs of the growing population but also to develop agritourism. The major challenge in crop production like irrigation, de-weeding, etc can be handled with good improvement in quality crops through the implementation of automated systems in monitoring and controlling application. With more Techies joining into the farming wishing to lead a stress-free life, automation. The work presented aims at identifying the weeds from the desired crop using the learning algorithm. The weed location identified can be used as the inputs to the de-weeding Robots. Besides, the work can equally be applicable in intercropping process, irrigation management, quality assurance in crops, etc. The input images of the crop to be classified are taken using the camera interfaced with Raspberry pi. Classification is done using the supervised learning algorithm with a set of target classes. The model is trained to recognize the target class. The accuracy of the classification varies from 75% to 100% as the proportion of the training and test data set varies from 60-40% to 80-20%.
Pulsed electric field application on pasteurization of orange milk from low grade orange: study on nutritional, physical, chemical properties, and total microorganism
Authors: Hariono B , Brilliantina A , Sari E K N , Kurnianto MF , Erawantini F , Supriyono  , Kautsar S
Published: February 2022

Oranges with low grade categories have a low price, so one of the utilization efforts is combine with milk into orange milk products.. Orange milk, extracted from orange of siam cultivar and added with milk, was pasteurized using a pulsed electric field (PEF) method. The aim of this research was to analyze the changes on nutritional, physical and chemical properties and total microbes from orange milk after pasteurization. The research was conducted from July until September 2021 located in Jember. The PEF treatment was carried out using treatment time variation for 5 minutes (1 cycle), 10 minutes (2 cycles) and 15 minutes (3 cycles). Several parameters of Vitamin C, pH, dissolved solid and total microbes were observed. The result showed that PEF treatment did not significantly change nutritional (vitamin C), physical (dissolved solid), and chemical properties (pH), but total microbes very significantly change after pasteurization with PEF in compared with no treatment pasteurization. The best treatment was found in the variation of 15 minutes (3 cycles) with degradation microbial killing effectiveness reached 94.58%.
Agricultural Commodity Sales Recommendation System For Farmers Based on Geographic Information Systems and Price Forecasting Using Probabilistic Neural Network Algorithm
Authors: Utomo A H , Gumilang M A , Ahmad A
Published: February 2022

Since the implementation of social distancing and physical distancing due to the outbreak/pandemic of the Coronavirus (Covid-19), direct sales in the market have experienced a shortage of buyers. Farmers also share this in Indonesia, where the price game offered by collectors does not match the market price. The second problem is the mismatch of prices in each market, forcing farmers to check locations to sell their agricultural products. This problem is also experienced by the O’reng Rembangan Community Information Group (KIM), one of the community groups engaged in production to cultivate vegetable and fruit gardens in Kemuning Lor Village, Arjasa District, Jember Regency. The purpose of this research is the creation of an information system that can help farmers, especially KIM O’reng Rembangan, to obtain current market price information, receive market recommendations for agricultural products, get the nearest market from the location of farmers, and can be used by sellers to make purchases, optimize stock merchandise. This research also focuses on the prediction of agricultural commodity prices. The method used is the Probabilistic Neural Network (PNN) method to estimate the price of agricultural commodities. The resulting system in this study consists of 2 parts. The first part is the input device, which officers can use to enter the price of each agricultural commodity directly from each market. The second part is a Geographic information system used to display the forecasting results of agricultural commodity prices in each market. The forecast of agricultural commodity prices in this study has an accuracy of 98.3%.
A Prototype of Raspberry Pi Camera Morphometric Measurements on Sheep Using Digital Image Processing
Authors: Rahagiyanto Angga , Prakoso Bakhtiyar Hadi , Adhyatma M.
Published: February 2022

Quantitative data are needed to identify and predict opportunities for increasing livestock productivity. The increase in livestock productivity can be assessed from the dimensions of the body of the livestock by measuring directly using morphometric. Morphometric data is an important parameter used to study livestock anatomy, productivity, growth rate, and performance quality of livestock. This research is focused on how to make a prototype development of a camera tool that can measure livestock morphometrics at a distance. The Camera use in mini camera with a raspberry pi as a microcontroller. And method to process the capture of data is Artificial Neural Network that downloaded from tensor flow. The result of this experiment show that the accuracy of the system is 50%. However, the camera has not been able to identify the object of farm animals correctly. There are several livestock objects detected as dog or cat. For the future work the library must be modified so it can only detect the sheep or goat so the morphometrics can be done.
Optimization Design for Manufacturing and Assembly Method in Multifeedstock Jember Biodiesel Processor
Authors: Budiprasojo A , Zain A T , Karimah C N
Published: February 2022

A method used to optimize the design process in a manufacturing system is the Design For Manufacturing and Assembly Method (DFMAM). The idea of this optimization method is to minimize assembly process errors, reduce redundancy of components, save on production costs, as well as ease of operation. In this study, the method will be used on a biodiesel processor with multi feedstock type equipped with intelligent system for production perimeter control that is specifically designed to produce biodiesel from corn and coconut oil as raw materials produced by Jember, Indonesia. The design framework is made suitable for small-scale biodiesel production in MSMEs for industrial or laboratory purposes, in order to produce biodiesel that meets the biodiesel standards of Ministry of Energy and Mineral Resources of Republic of Indonesia. Processor component assembly via the DFMAM principle is simplified to reduce component complexity and redundancy. The biodiesel produced by this method has been tested and recorded a density value of 15 cel.deg. 874 - 877 kg/m3, viscosity at 40 cel.deg 4.3 – 4.7 mm2/s, Acid value 0.14 0.15 mg KOH/g, Cetane 56 – 58, Cloud Point 7 – 8 cel.deg., pour point 4 – 5, Flashpoint 171 – 178 cel.deg and distillation point 345 – 350 cel.deg.
The effect of changes in the fluid flow rate of Virgin Coconut Oil (VCO) on the immersion cooling process
Authors: Rachmanita R E , Utama G P , Budiprasojo A , Anwar S , Rudiyanto B , Seetawan T
Published: February 2022

The cooling system in computer equipment generally uses a conventional fan, where the heat transfer occurs by radiation so that the level of heat absorption is not optimal in computer components that generate heat. In overcoming these problems, a cooling system using the immersion cooling method is used. The use of an immersion cooling system on computer equipment aims to compare the temperature drop on CPU performance using conventional cooling and immersion cooling. In testing the computer system will be operated for 24 hours with maximum CPU performance. Variations of the immersion cooling system in the form of flow rates of 2, 4 and 6 lpm with variations in the rotation of the radiator fan at 200, 400 and 600 rpm. The results of the test show that the temperature reduction that can be achieved by conventional cooling is 71.2°C, while the temperature decrease in the immersion cooling system with the best variation is at a water rate of 6 lpm and a fan rotation of 600 rpm is 42.8°C. The results of the test can be seen that the immersion cooling system can significantly reduce the working temperature of the CPU.
Study on influencing factors and laws of infrared temperature measurement of silicone rubber composite insulator
Authors: Chen Zhiyong , Qu Jin , Shen Hao , Yao Pengfei , Cai Yingming
Published: February 2022

Silicon rubber composite insulator is favoured by power system because of its excellent anti-pollution flashover performance. Among them, the core rod is an important structural component to bear the mechanical load of composite insulator. In recent years, there have been many brittle fracture faults of composite insulators in China, which directly affect the reliability of transmission lines. The composite insulator is usually accompanied by abnormal heating during the aging process. As an effective live detection method, infrared temperature measurement can find the defects of composite insulator in time and reduce the occurrence of string breaking accidents. In this paper, by artificially simulating the abnormal temperature rise of composite insulator, infrared temperature measurement was carried out under the conditions of different observation distance, different observation angle, different sheath thickness and different heat source temperature, so as to explore the influencing factors and laws of infrared temperature measurement of composite insulator. The results show that due to the difference of heat loss, sheath barrier and radiation ratio in thermal radiation propagation, the measured temperature decreases and the absolute temperature difference increases with the increase of observation distance, sheath thickness and observation angle. The built-in heat source temperature increases the total internal heat, which can partially weaken the influence of sheath thickness on the measured temperature and significantly expand the difference caused by observation angle.
110kV high voltage cable sheath transposition to reduce the grounding induction currents
Authors: Fang Jun , Zhang Yanchi , Liao Wanting , Ju Pengfei , Ding Tian , Xie Da , Zhao Wenbo
Published: February 2022

When the high voltage cable core passes through the alternating current, the metal sheath will produce induction electricity under the action of electromagnetic induction. When the sheathes are grounded, the induced currents will reduce the transmission capacity of the wire core and increase the power loss. This paper firstly introduces the grounding mode of cable sheath, and then analyzes the grounding mode at both ends of the sheath and the induced current of cross-connected grounding through ATP-EMTP software simulation. The results of the research have shown that: when the cables are in normal operation, the sheathes adopt cross-connected grounding, the induced currents are reduced, and the energy loss caused by induced currents can be neglected. In actual engineering, due to the non-uniform length of each section of cables, when the cable sheathes are cross-connected, there will be residual positive and negative sequence current in each phase of the sheath after complete transposition.
Continuous-time projected gradient algorithm based optimal dispatch of distributed generators
Authors: Wang Weiyuan , Dou Fei , Cheng Jinmin , Hu Wei , Wan Zhendong , Xu Yiqing
Published: February 2022

Traditional dispatch or control method will suffer great difficulty with large scale integration of plug-and-play distributed generators in the power systems. The distributed control method can mitigate the burden of the power systems with distributed generation. In this paper, a continuous-time projection gradient algorithm based optimal dispatch method is proposed to improve the effectiveness of distributed control method for distributed generation. The proposed method does not rely on the known total load of the power system and the artificial initial value of state variables which are used widely in the consensus-based control methods, but only the projection operator is used to constrain the output of the distributed power supply, which can automatically run to the optimal point of the economic dispatch, thus significantly improving the practicability of distributed control method. Case study verifies the effectiveness of the proposed method.
Wavelet packet coefficient of transient first half wave line selection method for single-phase grounding fault
Authors: Gong Jing
Published: February 2022

Overvoltage will occur after single-phase grounding fault in distribution network, endangering system insulation. It is of great significance to find out the fault line as soon as possible to ensure the safe operation of the system. Wavelet modulus maxima can be used to detect the sudden change singularity of transient current. However, the judgement of single mode maximum value is easily influenced by the form of fault and interference, leading to misjudgement. In this paper, the transient characteristics of single-phase grounding fault are analyzed, and the magnitude and phase characteristics of the first half wave are given; Based on wavelet packet algorithm, several key problems such as boundary effect, wavelet selection and decomposition scale are explored; Taking the zero sequence voltage as the reference to determine the fault interval, the zero sequence current of each line is decomposed by three-scale wavelet packet using db6 wavelet, and the wavelet coefficients of the characteristic frequency band are extracted for comparison. The fault line is the one with the largest amplitude and different phase from others. The distribution system model of neutral grounding through arc suppression coil is built. Simulation is carried out for several cases with great difficulty in line selection, such as short circuit when phase voltage crosses zero, high resistance grounding and long line fault. The experimental results prove the reliability of this method.
Analysis of the impact of epidemic situation on total electricity consumption of the United States under the prediction scenario
Authors: Ma Minglu , Wang Qiang
Published: February 2022

The outbreak of COVID-19 epidemic has led to a decline in electricity consumption in the United States, the world’s second largest consumer of electricity. Based on the monthly data of the United States from August 2015 to July 2020, this paper uses the ARIMA model and the ARIMA-BP model to forecast the power consumption of the United States in the next 17 months. The Mean Absolute Percentage Error (MAPE) is 5.6% and 4.5% respectively. It shows that the prediction results have high reliability. The results of prediction research will provide a scientific basis for the normal adjustment of electricity supply and demand in the United States, and the method used in this study can be used as a reference for the study of electricity consumption in other countries.
Influence of sheath thickness and core rod diameter on fault temperature rise of composite insulator
Authors: Liu Hui , Shen Hao , Qi Zhao , Sun Xiaobin , Li Dandan , Jia Ran , Liu Rong , Zhang Yang
Published: February 2022

Infrared temperature measurement is an effective means for insulator health monitoring, and the theoretical basis and the subsequent diagnosis methods have been widely studied. However, in practical applications, the influence of insulator itself on fault temperature rise is rarely considered. In this paper, the temperature rise experiment of composite insulator was conducted to study the influence of sheath thickness and core rod diameter on fault temperature rise. According to the experimental results, the evolution law of fault temperature rise with the change of sheath thickness and core rod diameter was obtained. On this basis, the design strategy for composite insulators was proposed.