bluuebunny/crossref_metadata_2025 huggingface dataset:
A COMPARATIVE STUDY OF FUNCTIONAL OUTCOME OF INTRA-ARTICULAR DISTAL RADIUS FRACTURES TREATED SURGICALLY USING VOLAR PLATING VERSUS LIGAMENTOTAXIS.
Authors: S. Garampalli Anand. , Kulkarni Sourabh
Published: March 2023

Background & Objective: Distal radius fractures are most frequently encountered fractures accounting for 17.5% of all
fractures in adults. Majority of them are intra-articular. The management has changed from conservative to operative
management with better understanding of the nature of injury and pattern of fracture. The study was conducted to
compare the functional outcome of intra-articular fracture of distal radius treated surgically using volar plating or
ligamentotaxis and to study the post-operative complications in both techniques. We conducted Materials & Methods:
a prospective interventional study on 45 patients with intra-articular distal radius fractures admitted in department of
Orthopedics, Basaveshwar Teaching and General Hospital, Kalaburagi, who underwent surgery either by
ligamentotaxis or volar plating. Patients were followed up at 6 weeks, 3 months and 6 month and their functional outcome
was assessed at each follow up using Quick DASH score. This study included 45 patient, of which 28 we Results: re male
and 17 were female patients. 14 patients were operated with ligamentotaxis with mean age of 45.2 years and 31 with volar
plating mean age of 45.7 years. The average duration of follow up was 6 months. Patients were assessed using Quick
DASH score. Among ligamentotaxis group the results were excellent in 1 (7.1%) patient, good in 5 (35.7%) patients,
satisfactory in 5 (35.7%) patients and poor in 3 (21.4%) patients. Among volar plating group the results were excellent in
12 (38.7%) patients, good in 14 (45.2%) patients, satisfactory in 4 (12.9%) patients and poor in 1 (3.2%) patient with a p
value=0.02 (p< 0.05). We concluded that volar plating provides better functional outcome in patient Conclusion: s with
intra-articular distal radius fractures than ligamentotaxis
FORMULATION AND EVALUATION OF GEFITINIB NANO CRYSTALS
Authors: Sobitha Rani P. , Anand Reddy S , Udaya Chandrika P , Sowmya M
Published: March 2023

Nanotechnology will affect our lives tremendously over the next decade in very different fields,including medicine and
pharmacy. Transfer of materials into the nanodimension changes their physical properties which were used in
pharmaceutics to develop a new innovative formulation principle for poorly soluble drugs like gefitinib, an anticancer
agent,is taken as a model drug characterized by poor solubility and bioavailability.In this study an attempt was made for
preparation of nanocrystals using bottom up technique. PVP and Tween-80 were used as stabilizer and surfactant at
different concentrations, and all the 9 formulations were prepared by precipitation method.The obtained nanocrystals
were evaluated by determining their particle size, zeta potential, poly dispersity index, fourier transform infrared
spectroscopy (FTIR), X-ray powder diffraction (XRD), drug pay load and in-vitro diffusion studies.The particle sizes of
the obtained nanocrystals are in below 100nm with low polydispersity indices.Zeta potential is sufficiently high to obtain
a stable colloidal nanosuspension. FTIR, and XRPD studies revealed the differential properties of nanocrystals. The
formation of nanocrystals was confirmed by FTIR spectroscopy. The crystalline nature of the nanocrystals was
determined by XRPD.The in-vitro diffusion studies were performed in phosphate buffer.Tween 80 releases 90% of the
drug within 3 hrs but in case of PVP and combination of PVP and tween 80,the release was extended to 4 hrs.PVP releases
only 80% of drug in 4 hrs but combination of PVP and Tween formulations release maximum amount of drug i.e., 99%
within 4 hrs.The drug payload was above 80% in all the 9 formulations. In conclusion gefitinib nanocrystals prepared
with tween 80 and PVP showed enhanced and sustained diffusion rate when compared to the other formulations.
CASE REPORT OF A RARE DISEASE : MELORHEOSTOSIS
Authors: Shetty Anvith
Published: March 2023

Introduction: Melorheostosis is a rare, non-genetic, non-developmental, sclerosing developmental dysplasia of bone
and adjacent soft tissue. The characteristic radiographic appearance is that of candle wax dripping. Diagnosis is usually
based on classical radiographic appearance rather than clinical picture. A 26 year old female with Case report: dull
aching pain over upper third left leg and knee with limitation in movements and associated swelling. On examination
tenderness and limitation of movements were present. Plain radiograph showed extensive, dense, undulating or
irregular cortical hyperostosis, resembling candle wax dripping along length of left tibia suggestive of Melorheostosis
and MRI showed features of Osteopathica striata of left femur and Osteopoikilosis of left hip joint. Inj. Zolindronic acid
given. Physiotherapy was started to avoid contractures. Lab investigations in Melorheostosis is usua Conclusion: lly
normal. Exact pathophysiology of the disease remains uncertain. No curative treatment options are available.
Bisphosphonates, Denosumab and physiotherapy are the available options for treatment.
GLASS CEILING EFFECT AMONG WOMEN IN LEADERSHIP POSITION IN HOSPITALS
Authors: Joseph Jasmine , Vijayan Deepthi
Published: March 2023

The aim of the study was to explore the glass ceiling effect faced by women leaders in hospital. The study was conducted
on a population from the state of Kerala and Delhi, whereby fifty- three participants filled out the screening questionnaire,
out of which ten participants were screened out to be a part of the qualitative study using semi-structured interviews. The
sample consisted of women in leadership position for at least more than a year. Certain areas were explored, which lead
to a finding that the women in leadership positions face a plethora of issues at workplace revolving around aspects like
overwork, challenges faced, relationships in workplace and employees, discrimination faced and the expertise in the
field etc. The major aspect that was brought into focus was that women's gender denies them the best opportunities
CHARACTERISTICS AND MANAGEMENT OF EXTREMITY VASCULAR INJURIES: A REVIEW OF
CASES AT A TERTIARY CARE CENTRE
Authors: Duraichi B.Vella , Ramya M. , Ranjith Babu R. , Remin Vaisagh , Sritharan N. , Jayachander K.
Published: March 2023

Background: Vascular injuries of extremities are very common in developing countries. The major causes are road
traffic accidents, falls, workplace injuries with sharps and machines. Objectives: Through this study we would like to
share our two years of experience in treating vascular injuries of extremities. Methods and Material: This is a
retrospective study covering a period of two years from August 2020 to August 2022 conducted in the Institute of vascular
surgery, Madras Medical College, Chennai. Case sheets were retrieved and reviewed. Patients with vascular injuries
including upper limb and lower limb that presented with signs of salvageable limb were included in the study.Patients in
whom primary amputation was done was excluded from the study. Statistical analysis used:SPSS SOFTWARE Results:
There were 94 patients who presented with vascular injuries of the extremities that fell in the inclusion criteria. Limb
salvage rate was 95%. The major cause of limb loss was delay in presentation of more than 12 hours of injury. Major
vessels involved were popliteal artery (35 %),followed by brachial artery (20.2 %).Conclusion:Vascular injuries are a
major cause for limb loss in developing countries. The major causes are RTA, fall and accidental sharp injuries. The
major cause of limb loss is delay in presentation and unavailability of vascular facilities.The morbidity can be reduced
by developing an emergency ambulatory system and by making available vascular services in remote areas so that
delay factor can be minimized.
A STUDY OF STROKE CHARACTERISTICS IN A TERTIARY CARE HOSPITAL – AN OBSERVATIONAL STUDY
Authors: Maharajan P Dhileeban , Subramanian R , R. Manivannan M.
Published: March 2023

Background: Stroke is a major global public health problem.According to the Global Burden of Diseases (GBD) study in
1990, stroke was the second leading cause of death worldwide.According to the estimates from the GBD study in 2001,
over 85 per cent of the global burden of stroke was borne by low- and middle-income countries.This study aims to review
the prevalence of stroke in a tertiary care hospital in southern India. Methods:The study includes all the Stroke patients
admitted in Government Rajaji Hospital,Madurai during the period of 01 January 2022 to 31 December 2022. Results: A
total of 2246 patients were taken into study,there were 1742 males and 504 females.There were a total of 1548 ischaemic
stroke patients (69%), when compared to 698 haemorrhagic stroke patients (31%). Anterior circulation stroke
prevalence was higher (83%) when compared to posterior circulation stroke.A total 782 patients (34.8%) belonged to
the age group of 45 to 60 years. Conclusions: This study shows that there is increasing prevalence of stroke in southern
India. This study also showed that most of the strokes occur in age group less than 60 years and anterior circulation
strokes are more compared to posterior circulation strokes.
OUTCOME OF EMERGENCY SURGERY IN COVID-19 POSITIVE PATIENTS: EXPERIENCE IN A TERTIARY CARE CENTRE IN NE INDIA .
Authors: Raj Abhisek , Rajesh Mopuri , Bhattacharjee Aritra , Bhuyan K
Published: March 2023

Background: The COVID-19 pandemic led to a halt to almost all kinds of surgery throughout India. There was increased
risk of requirement of ICU care and high rate of mortality. Surgical interventions in emergency situations were
necessary to save life. The outcome in covid positive patients undergoing emergency surgeries has not been well
studied during the initial stage of outbreak. The aim of this study was to determine the outcomes of emergency surgery in
covid-19 positive patients. A retrospective review was performed of all COVID-19 positive Materials and methods:
patients undergoing emergency intervention during June 2020 to August 2020 at a teaching hospital in North East India.
Details and conditions of patients at the time of surgery are retrieved retrospectively from available medical records.
Clinical characteristics and mortality were analysed. There were 28 patients who underwent emergen Results: cy
surgeries during the period. There were 10 females and 18 males with age group varied between 10 to 72 years. The
majority of patients 13(46%) were in American Society of Anaesthesiologists (ASA) class 3. All patients were treated in
ICU & Covid care wards post operatively. The mean length of stay was14 days. There were 5 deaths (18%) in the study
group. All of the patients were in ASA class 2 or 3. The odd ratio for mortality with ASA Class 3 was 6 (p value: 0.1528; 95%
CI of 0.47-327.10). All the patients with poor results were associated with co-morbidities with odd ratio of 6. (P
value:0.1528; 95% CI of 0.47-3271). In this analysis it was found that emergency surgical interven Conclusions: tions
were feasible with all precautions. The mortality was associated with high ASA class , co-morbidities and extremes of
ages.
ASSOCIATION OF INTRAOCULAR PRESSURE CHANGES IN DIFFERENT DEGREES OF MYOPIA
Authors: Jain Shubhnav , Jain Rohan
Published: March 2023

Introduction: Myopia, also known as “short-sightedness” or “near-sightedness,” is an increasingly widespread
condition around the world. Myopia is commonly defined as a spherical equivalent (SE) ≤ 0.5 dioptres (D) and
develops mainly during childhood and early adulthood when excessive elongation of the eye causes images of distant
objects to fall in front of the retina with the eye at rest, resulting in a blurred distance vision. Myopia can be classified
according to age of onset, clinical variety, etiology, and degree. According to the degree, myopia can be classified as
mild/low myopia (-0.25D to -2.75D);moderate/medium myopia (-3.00D to -6.00D) and high myopia (Above -6.00D).Aim
and Objective: To investigate the intraocular pressure changes in the different degrees of myopia. Material and
Methods: This study was a clinical study carried out at the department of ophthalmology, rukmani birla hospital,Jaipur.
An informed consent was gotten from all the subjects who were part of the study.Clinical tests performed on the subjects
include case history, visual acuity, external eye examination, ophthalmoscopy, static retinoscopy and subjective
refraction. The subjects with myopia were grouped into three according to the degree of myopia. Their intraocular
pressure was measured using the indentation tonometry. Data was collected and uploaded into the Statistical Package
for Social Sciences (SPSS) version 21 and the one-way ANOVA was used to test the null hypotheses at 0.05% level of
significance and 95% confidence interval. Result: The study included a Sample size of 100 Patients.The table showed
that 50 (50.00%) of the subjects had mild myopia;42 (42.00%) had moderate myopia and 8 (8.00%) had high myopia.IOP
of 10 - 15 were 20 (20.00%);16 -20,26 (26.00%);21 – 25,4 (4.00%);26 – 30,0 (0.00%).Minimum,maximum and mean IOP
values for low myopes were 10.3,30.6 and 17.13 mmHg respectively.For medium myopes,the minimum,maximum and
mean IOP values were 11, 22 and 16.63 mmHg respectively. For high myopes, the minimum, maximum and mean IOP
values were 18.8, 22 and 20.15 mmHg respectively. SPSS data analysis using the one-way ANOVA at 0.05 level of
significance showed that there was a significant difference [P(0.036) < 0.05] in the IOP values between the different
degrees of myopia. Conclusion: In conclusion, there was a significant difference in the IOP of different degrees of
myopia.Eye care practitioners are advised to closely monitor the IOP of their myopic patients.For young children,as the
myopia progresses,the IOP should also be monitored.
THE PROGNOSTIC INDICATOR OF TUMOR INFILTRATING LYMPHOCYTES IN BREAST CARCINOMA
Authors: Sindhu. S. Kumar A. , B. N Navya , B Rajesh , Rao Kedige Anjali
Published: March 2023

Introduction: Breast cancer is one of the common malignant tumors in women. The use of biomarkers ensures breast
cancer patients receive optimal treatment. Tumor-infiltrating lymphocytes (TILs) are emerging as one of the key
prognostic markers of breast cancer. Our study aims to evaluate percentage of TILs in Objectives And Methodology:
tumor tissue, grading TILs based on the recommendations by an International TIL Working Group 2014 & compare with
ER & PR status and in relation to concentration of TILs we assess prognosis of breast carcinoma for a period of 6 months.
Results: Among 30 study subjects, TILs were of intermediate, high & lower grade in 53.3%, 40% and 6.7% cases
respectively. TILs expression was statistically significant in both ER and PR, positive & negative groups (p<0.05). TILs
were statistically highly significant as a prognostic marker in hormone negative breast cancers (p<0.05). Conclusion:
Our study concludes that high TILs are correlated with favourable survival and response to treatment in breast cancer
patients with ER, PR negative molecular subtype
“SPATIAL ANALYSIS OF IRRIGATION AND MAJOR OILSEEDS PRODUCTION AND PRODUCTIVITY IN DHARWAD DISTRICT OF KARNATAKA STATE.”
Authors: S. Motebennur S.
Published: March 2023

Agriculture is not only an important economic activity but also a farm of social heritage and a way of life for the millions of
Indian farmers. Irrigation is playing an important role on growing the oilseeds sector, there is an urgent need to find out
ways to increase water supply. In this regard Dharwad district, which is a glomeration of wet and dry weather features
and also the mixture of different soils and irrigated and dry cropping system represents a typical region to study the
agricultural geography in general and major oilseeds in particular. Edible oilseeds cultivation in India is an integral part
of agricultural system, as edible oilseeds are part of food item for the human population. The cultivation of oilseeds are
found in all taluks of Dharwad district where annual rain fall to extent of 75 cm is available, besides the availability of
irrigation in some parts, coupled with availability of black and red soils that have favored the cultivation of oilseeds
EVALUATION OF QUALITY OF LIFE AND ANXIETY AMONG PATIENTS WITH CERVICAL CANCER.
Authors: Hamza Hamza , Akhouri Deoshree , Devi Seema , Anand Anupam
Published: March 2023

Background: - As per World Health Organization, 4th most common type of cancer is cervical cancer globally whereas
in India it is the 2nd most common type. It can be defined as the occurrence of malignant cells in the cervix – the lower
part of the uterus that connects to the vagina and can be of two types, they are Squamous cell carcinoma and
Adenocarcinoma. It can be cured or managed if diagnosed at an early age. Multiple sexual partners and bad sexual
hygiene are some of the most common causes of this type of cancer in India. Women diagnosed with cervical cancer
faces psychological problems e.g., depression, anxiety, stress etc. All these factors play significant role to decrease
quality of life of the individual. Numerous studies have been done on these psychological issues but there is a paucity of
research on their quality of life and anxiety particularly in Indian scenario. The objectives of the Aims & Objectives -
present study were to assess and compare the quality of life and anxiety between the cervical cancer and normal people.
Methodology: - In the present cross-sectional study, total of 120 subjects were taken according to pre decided inclusion
and exclusion criteria, in which, 60 patients diagnosed with cervical cancer by Radiotherapist with age range 18-60
years, females, literate and illiterate belonging from the rural and urban population were included in present study. 60
normal subjects were matched accordingly and assessed by General Health Questionnaire (GHQ), then whose score
was <3 was included in the study after that both groups were assessed on WHOQ OL-BREF and Hamilton Anxiety Rating
Scale. Findings of the present study suggests that cervical cancer patients have poor quality of Results & Conclusion: -
life and increased anxiety than normal patients
CASE REPORT OF AN INDIAN IMMUNOCOMPETENT TODDLER WITH LUNG ABSCESS
Authors: A. Banker Deepa , .R. Parekh Zankhana , Y.Ganatra Shachi , B. Shah Priyanka , T Maheshwari Vimal , A. Patel Utsav , N. Patel Nikita , D. Bhadiadra Dviti , S. Thakkar Mansi
Published: March 2023

Pulmonary abscess is defined as lung infection that destroys the lung parenchyma, resulting in cavitation and central
necrosis, can result in localised area composed of thick-walled purulent material.[1] It can be either primary or
secondary. Here we present a case of a 3 year old female child who presented to our hospital with complaints of fever,
cough, cold, vomiting and decreased oral intake for 10 days. Lab tests revealed neutrophilic leucocytosis and raised
inflammatory markers. Chest roentgenogram and High resolution Computed Tomography of thorax were done which
established the diagnosis and size of lung abscess. Injectable antibiotics in form of cephalosporin, aminoglycoside and
glycopeptide group of drugs together were administered. Nosurgical intervention was needed. There was slow and
steady improvement in the patient's condition. Patient was discharged after 4 weeks of injectable antibiotics followed by
a course of oral antibiotics for 3 weeks to be taken at home.
Women's Knowledge about Late Motherhood and Pregnancy outcome in Kirkuk City.
Authors: Hanon Rabab Hamodee
Published: March 2023

Objectives: Assess women's Knowledge about Advanced Maternal Age and Pregnancy outcome.
Methodology: A descriptive study using the assessment approach was conduct on women, who ages above 35 years old. A purposive (non probability) sample of (58) women's that was selected for study in Azady teaching hospital and Kirkuk general hospital in the period of July 1st 2013 to April 10th 2014. A questionnaire was developed for the purpose of study
Result: The study findings demonstrate that the following variable was contributing significantly in the occurrence of complications during late motherhood among the study sample which include (age, late marred, level of education, smoking, and consanguinity). In sequence (67.3 %, 33%, 27.1%, 27.5%, 63.7%) The findings indicate that the women knowledge about risk of advanced maternal age generally is good for knowledge scale items.
Conclusions: Late marred of girls can be interrupted as a one sources of late motherhood mortality and morbidity, More than half of the study sample has high level of knowledge about risk of their age on pregnancy outcome.
Recommendation: Continuous education & training courses for health team especially to improve their knowledge and to take their roles in teaching and giving advice & instructions to pregnant women during certain age. And encourage the females about early marriage, and explain the risks of late marriage on both the baby and the woman.
Efektifitas Penerapan Sistem Merit dalam Penyelenggaraan Manajemen Aparatur Sipil Negara pada Instansi Pemerintah (Studi Kasus Kementerian Hukum dan Ham Republik Indonesia)
Authors: Saputra Teguh Dinata
Published: March 2023

Tuntutan akan tingginya tingkat kompetensi serta kinerja menjadi hal wajib yang dimiliki oleh Aparatur Sipil Negara. Hal ini bisa dilakukan melalui beberapa penerapan sistem merit yang dianggap relevan dalam proses penyaringan sumber daya manusia yang andal dan memiliki kompentensi yang layak dalam kinerjanya. Penerapan Undang-Undang Nomor 5 Tahun 2014 tentang Aparatur Sipil Negara menandai kelanjutan dari keberhasilan pelaksanaan reformasi birokrasi menuju profesionalisme pegawai yang terbuka, kompeten dan produktif. Keunggulan sistem ASN adalah penilaian kinerja berdasarkan prestasi kerja. Artikel ini bertujuan untuk mengkaji efektifitas penerapan sistem merit aparatur sipil negara serta mengevaluasi pelaksanaan sistem merit terhadap pengembangan pegawai sesuai kebutuhan dilingkungan Kementerian Hukum dan HAM. Data dianalisis menggunakan metode analsisi campuran yaitu kualitatif dan kuantitatif, sedangkan untuk Teknik Analisa data menggunakan teknik analisis pendekatan desain trianggulasi. Pada pembahasan fokus penelitian akan lebih mengarah kepada efektifitas penerapan sistem merit dalam manajemen aparatur sipil negara dengan memaparkan beberapa fenomena yang menjadi dasar belum maksimalnya penerapan sistem merit bagi birokrasi aparatur sipil negara di Indonesia. Selain itu pembahasan juga akan lebih berfokus terhadap kinerja aparatur sipil negara melalui teori sistem merit yang menjelsakan beberapa aspek peningkatan kinerja akibat penerapan sistem merit dalam pelaksanaan manajeman aparatur sipil negara. Kedepannya diharapkan di lingkungan Kementerian Hukum dan Hak Asasi Manusia, penerapan sistem kompetensi yang tertuang dalam muatan UU ASN dapat dilakukan secara profesional dengan mengutamakan tujuan yang sesuai dengan keterampilan dan kompetensi pegawai. Dan penerapan sistem merit dengan evaluasi netral dan uji kompetensi karyawan akan membawa perkembangan. Pengembangan profesional lebih baik dilaksanakan di Kementerian Hukum dan Hak Asasi Manusia.
Training and Assistance on the Use of Picture and Picture Learning Media at SDN Kedopok 2 Probolinggo
Authors: Ludfi Arya Wardana  , Dzaky Isyuniandri  , Nur Halimah  , Mamluatul Hasanah  , Reza F. Setiani
Published: March 2023

Community service is carried out to the teachers and students at SDN Kedopok 2 Probolinggo in the form of Picture and Picture training and mentoring. The purpose of this service was to improve the skills, teachers, student activities, and learning outcomes of fourth grade students of SD Negeri Kedopok 2 in science learning through the picture and picture type cooperative model. The implementation method of this service is planning, implementing, monitoring, and evaluation and recognition. The conclusion and result of this service is that through the picture and picture type cooperative model can improve teacher skills, student activities, and learning outcomes in science learning.
Training on the Utilization of Waste Waste into Brickets as Alternative Energy in Wringinpitu Village
Authors: Novita Nur Synthiawati  , Akeo Wahyudi  , Silvina Nur Aini  , Angga Wahyu Hidayah  , Deni Prasetyo
Published: March 2023

Wringinpitu Village is one of the furniture-producing villages located in the Mojowarno District, Jombang Regency, East Java Province. As an industrial village that produces furniture, of course there are products from the manufacturing process that are not used, namely wood sawdust (grajen). Grajen is a sawn waste that is not reprocessed by the community. In community service carried out by the implementing team, they offered a solution in the form of training in the processing of sawn wood waste which resulted in briquette products. Briquettes are one of the alternative fuels that are environmentally friendly, briquettes can usually be made from rice husks, coconut shells, corncobs and grajen. Which is in the making through the process of burning or writing which will later be mixed with starch or tapioca as an adhesive and then printed as desired which can later be sold by the public. Briquettes are environmentally friendly steel products, the difference between briquettes and other charcoals is that they have minimal smoke and are more durable.
Socialization Of The 2017-2020 Indoor Volley Ball Regulations On Volley Ball Sports Boarders In Pamona Utara District Poso District
Authors: Purwanto Didik , Murtono Tri , Kungku Christian , Sukrawan Nyoman , Aditya Rifandy Arief
Published: March 2023

Volleyball is a sport that is quite popular in Indonesia, especially in the province of Central Sulawesi. In the volleyball game, a player is not only required to master the basic techniques in volleyball, but players are also required to master the official rules of volleyball. And the coach or coach is also required to master the rules of the volleyball game and must know the task when bringing the team to compete. North Pamona District is one of the sub-districts in Poso Regency. Volleyball championships in North Pamona District always routinely carry out volleyball tournaments, but the coaches or coaches who bring the team do not really understand their duties in the field and are not supported by knowledge of the latest volleyball game rules. This situation requires the holding of socialization of the rules of indoor volleyball 2017-2020 in North Pamona District. The socialization of the 2017-2020 indoor volleyball rules will be held on August 13, 2021 at Sulewana Village, North Pamona District, from 07.00-17.00 WITA, the socialization material refers to the rules of indoor volleyball 2017-2020. Implementation of socialization for 1 day, which includes theory and practice. Participants came from volleyball coaches in every village in North Pamona District. There were 15 participants in the socialization activity.
DEFORMATIONS AND A TWO-SIDED EVALUATION OF THE NATURAL VIBRATIONS FUNDAMENTAL FREQUENCY OF A TRIHEDRAL TRUSS SPATIAL MODEL
Authors: Кирсанов М.Н.
Published: March 2023

Предложены схема и аналитический расчет статически определимой пространственной башенной фермы с полураскосной решеткой. Дается вывод формул для прогиба конструкции от действия боковой равномерно распределенной по узлам нагрузки и двухсторонних оценок первой частоты собственных колебаний фермы. Предполагается, что масса фермы сосредоточена в ее узлах. Зависимость решений от числа панелей фермы разыскивается методом индукции с применением операторов символьной математики Maple. Расчет жесткости конструкции выполняется по формуле Максвелла-Мора. Аналитические оценки частоты по методам Донкерлея и Рэлея сравниваются с первой частотой спектра частот, найденной численно. Показана высокая точность верхней оценки частоты, растущая с увеличением числа панелей.

A scheme and analytical calculation of a statically determined spatial tower truss with a semi-diagonal lattice is proposed. The derivation of formulas for the deflection of the structure from the action of a lateral load uniformly distributed over the nodes and two-sided estimates of the first frequency of natural oscillations of the truss is given. It is assumed that the mass of the truss is concentrated in its nodes. The dependence of solutions on the number of truss panels in height is found by induction using Maple symbolic mathematics operators. Calculation of structural rigidity is carried out according to the Maxwell-Mohr formula. Analytical frequency estimates by the Donkerley and Rayleigh method are compared with the first frequency of the frequency spectrum found numerically. A high accuracy of the upper frequency estimate is shown, which increases with the number of panels.
Investigation of the genetic algorithm in the correction scheme of inertial navigation systems in the conditions of the disappearance of signals from external sensors
Authors:   Derina E.A. Polyakova A.A.
Published: March 2023

A scheme for correcting inertial navigation systems in the output signal at the signals disappearance from external sensors of navigation information is considered. The correction is carried out by using predictive error models of the inertial navigation system built by using a genetic algorithm. Measurement accesses of genetic algorithms used for short-term, medium-term and long-term error prediction of inertial navigation systems are studied. Factors that influence the accuracy of predictive models are identified. Recommendations for the practical use of genetic algorithms in the correction scheme of inertial navigation systems are formulated.

Keywords
inertial navigation system, absence of external signals, correction, genetic algorithm, measuring access, short-term forecast, long-term forecast, recommendations
Physical model for experimental study of an electromechanical vibration transducer with a spiral closed secondary element
Authors:   YAngirov I.F. Halikov A.R. Safiullin R.A. Fedosov E.M.
Published: March 2023

For the first time, a physical model in the form of an electromagnetic gun for the study of electromechanical vibration transducers with a spiral secondary element is proposed. The use of a physical model makes it possible to develop a research stand for determining the mechanical characteristics of an electromechanical vibration transducer (EMVT) with a spiral secondary element based on strain gauges and to obtain the necessary experimental data for further scientific work.

Keywords
electromagnetic gun, short-circuited coil, vibration transducer, strain gauges, mathematical model
Filastruder
Authors:   Mikaeva S.A.
Published: March 2023

The article is devoted to the development of an economically and technically efficient device for the processing of plastic waste arising from the 3D printing process. The prototypes of the developed filastruder model are considered and the advantages and disadvantages of existing analogues are considered. A technological map, a block diagram of the developed device and its control program code are considered. The ecological and aesthetic assessments of the device are given.

Keywords
electronics, 3D printing, filament, filastruder, block diagram, technology chart, prototype, model
Investigation of the reliability automatic switches B-type
Authors:   Vahrushkin I.V. Mikaeva S.A. Juravleva YU.A. Jeleznikova O.E. Kovalenko O.YU
Published: March 2023

The article is devoted to the study of the reliability of protection B-type automatic switches for residential premises. Particular attention is paid to protection against short circuits. The most widely used B-type automatic switches: B8, B16, B25, calculated for a current 3... 5 A, but having a greater sensitivity to short circuits, were nvestigated.

Keywords
automatic switch, short circuit, electrical network, protection and control function, current, wire crosssectional area
Argon arc surfacing with high corrosion resistance on inner cylindrical
surface of forgings made of low-alloy steel of strength class 85K
Authors: Prokhorov A.P.
Published: March 2023

The procedure of surfacing a corrosion-resistant layer on low-alloy steel treated according to the adjusted
heat treatment regime is considered and macro- and microanalysis of the structure of the base metal, the fusion line and the surfacing metal are carried out. Using the original computer program of the author of the article, the tendency of the deposited system to crack formation is estimated.
SIMULATION OF ELECTRO-THERMAL CONDITION IN A FAULTY LOW-CURRENT CONTACT
Authors:   ", DANKAT Gideon-Gwanzuwang ,   University POLITEHNICA of Bucharest Faculty of Electrical Engineering", DUMITRAN Laurentiu-Marius
Published: March 2023

It has been suggested in earlier literature that the accuracy of the thermal simulation of electrical connectors is closely related to contact resistance. Contact resistance in electrical connectors occurs due to both constriction resistance (caused by narrow paths in which the current flows through the electrical connector) and film resistance (oxidized metals caused by the high resistivity of materials and impurities from the atmosphere etc.). This paper reviews the oxidation and wear affecting electrical connectors by proposing a thermal-electrical coupled finite element simulation (FEM) of the contact temperature rise of a simple contact model in COMSOL Multiphysics.
QUALITATIVE STUDY ON THE IMPACT OF ELECTRICAL ENERGY QUALITY PARAMETERS ON THE OPERATION OF ASYNCHRONOUS MOTORS
Authors:   ", DUMITRU Ana-Maria Marilema ,   University POLITEHNICA of Bucharest Faculty of Electrical Engineering", CAZACU Emil ,   "University POLITEHNICA of Bucharest Faculty of Electrical Engineering", PETRESCU Lucian ,   "University POLITEHNICA of Bucharest Faculty of Electrical Engineering"
Published: March 2023

One of the most common requirements in modern industrial applications is to minimize the costs associated with the operation, maintenance and possible repairs of the component systems. In industrial processes, induction motors are the most commonly used electromechanical converters in electrical drive systems. The extensive development of power electronics, as well as the relatively low manufacturing cost of asynchronous motors has determined a very high incidence of the presence of induction motor drive systems in industrial systems. The use of semiconductor devices to control the drive parameters of induction motors facilitates the tuning of the system and thus greatly improves its flexibility. However, the optimal use of such electric motors is limited due to the possibility of specific defects caused by the quality of the power supply. In this context, this paper proposes an analysis of the defects that frequently appear in the case of induction motors in industrial electrical drive systems as a result of deviations from the quality of the electrical energy of their power system parameters. Two deviations from the energy quality are mainly investigated, namely, the imbalance of the voltage value applied to the motor phases, respectively the harmonic distortions of the waveforms of the voltages applied to the motor. At the same time, an analysis of the failure rate is made according to various characteristics of the induction motors.
ON THE REPRESENTATIVE SPACE PHASOR CONCEPT FROM THE DYNAMIC MODEL OF THE THREE-PHASE INDUCTION MACHINE
Authors:   Facultatea de Inginerie Electrică, Umniversitatea Tehnică din Cluj - Napoca, RĂDULESCU Mircea M.
Published: March 2023

In the paper, based on the linear dynamic behavior models of the electrical and magnetic subsystems of the induction machine with three-phase symmetrical stator winding and polyphase rotor winding (cage type) in short circuit, the values ​​are represented, in the complex plane confused with the cross-sectional plane of the machine and the instantaneous polar angular positions of the amplitudes of the progressive (spinning) plane waves of the instantaneous resultant solenations of the machine windings, and correspondingly, the spatial phasors representative of the instantaneous electrical circuit scalar quantities of the stator phase windings and rotor equivalents of the machine are defined. The metric (length and orientation) of these representative spatial phasors allows their physical significance to be revealed.
ANALYSIS REGARDING THE MECHANICAL PROPERTIES OF ALKALI-ACTIVATED FLY ASH-BASED GEOPOLYMER CONCRETE CONTAINING SPENT GARNET AS REPLACEMENT FOR SAND AGGREGATES
Authors:   NIRD URBAN-INCERC Cluj-Napoca Branch, 117 Calea Floresti, Cluj-Napoca, 400524, Romania, LĂZĂRESCU Adrian-Victor , IONESCU Brăduț Alexandru ,   NIRD URBAN-INCERC Cluj-Napoca Branch, 117 Calea Floresti, Cluj-Napoca, 400524, Romania, HEGYI Andreea ,   NIRD URBAN-INCERC Cluj-Napoca Branch, 117 Calea Floresti, Cluj-Napoca, 400524, Romania, FLOREAN Carmen ,   Technical University of Cluj-Napoca, IOSUD-UTCN Doctoral School, 15 Constantin Daicoviciu Street, Cluj-Napoca, 400020, Romania
Published: March 2023

As research regarding the production and optimization of geopolymer materials is constantly increasing and is fundamentally motivated by the need, identified both in the global ecological context and at national level, new materials can be developed using this type of binder. Sustainable consumption of resources, focuses on the capitalization of existing waste and prevention of generating new ones, therefore adopting the Sustainable Development principles. The increase in the utilization of sand from rivers for various construction purposes, which also disturbs the environment can be considered another damaging factor for the environment. Recycling of garnets and their use as replacement for sand aggregates could provide an ecological solution for the production of the alkali-activated fly ash-based geopolymer binders. The aim of this paper is to present preliminary results regarding the use of spent garnet as replacement for sand aggregates in the production of alkali-activated fly ash-based geopolymer binders using Romanian local raw materials and to study its influence on the mechanical performances of the binder.
RESEARCH OF MODERN TECHNOLOGIES FOR THE RESTORATION OF STRUCTURAL ELEMENTS OF MINING PUMPS: ADVANTAGES AND DISADVANTAGES, PROMISING TECHNOLOGIES
Authors:   Transport and Mechanical Engineering Department, M. Kozybaev North Kazakhstan University, SAVINKIN Vitaly V. ,   86, Pushkin Street, Petropavlovsk 150000, Kazakhstan, IVANOVA Olga V. ,   Transport and Mechanical Engineering Department, M. Kozybaev North Kazakhstan University; 86, Pushkin Street, Petropavlovsk 150000, Kazakhstan, ZHUMEKENOVA Zaure Zh. ,   Transport and Mechanical Engineering Department, M. Kozybaev North Kazakhstan University; 86, Pushkin Street, Petropavlovsk 150000, Kazakhstan
Published: March 2023

The scientific article is devoted to the study of modern technologies for restoring the internal surfaces of critical parts of the structural elements of oil and gas pumps. By the method of critical analysis of defects, it was found that paraffin deposits and mechanical impurities are in the list of the main complicating factors leading to abrasive wear of the working surface of the parts being contacted. Asphalt-resin-paraffin deposits together with mechanical impurities are distributed unevenly, for example, along the diameter of the cylinder of the injection column, narrowing the passage section of the rod in different stroke length intervals. This phenomenon causes the rod to deviate from the design axis of the trajectory of movement and forms sections of the cylinder working under shock loads with maximum wear. Therefore, it is necessary to restore the degraded surface in places where maximum dynamic loads are applied. The patent search method and the evaluation of the claims allowed us to establish that the generally accepted methods of restoring internal surfaces are reduced to nitriding and chrome plating. Due to known technological shortcomings, these methods are limited in application, and it is impossible to restore the phase structure by these methods. To solve the technological problem of restoring the structure and modifying the inner surface of a small cylinder diameter, it is proposed to apply a coating with a ceramic protective layer based on nickel alloys of the carbide class, which has high hardness and inert properties. To restore the surface of worn parts in conditions of a limited coordinate space of long-dimensional elements of the RDP structure (pump and compressor pipes, a pair of cylinder-plunger and others), the authors propose a promising laser spraying.
OPTIMIZATION OF HOT AIR SOLDER LEVELING (HASL) MACHINE FOR A ROBUST SURFACE FINISH IN SOLDERING APPLICATIONS
Authors:   Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis (UniMAP), Perlis 02600, Malaysia, RAMLI Mohd Izrul Izwan , MUHD AMLI Siti Farahnabilah ,   Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis (UniMAP), Perlis 02600, Malaysia, SAUD Norainiza ,   Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis (UniMAP), Perlis 02600, Malaysia, CHE HALIN Dewi Suriyani ,   Geopolymer & Green Technology, Center of Excellence (CEGeoGTech), Universiti Malaysia Perlis (UniMAP), Perlis 02600, Malaysia, MD FAUZI Nur Akrimi Maswa ,   Geopolymer & Green Technology, Center of Excellence (CEGeoGTech), Universiti Malaysia Perlis (UniMAP), Perlis 02600, Malaysia
Published: March 2023

Hot Air Solder Leveling (HASL) is one of the most commonly used surface finishes in the industry. HASL is also one of the least expensive types of PCB surface finishes available. This study aims to examine the influence on the solder joint microstructure of dipping time and solder temperature. During soldering process, the temperature that used were 300°C and 400°C. The dipping time was split into three batches which is 20s, 60s, and 100s. The Sn-0.7Cu-0.05Ni solder alloy was used in this analysis to shape the solder coating microstructure. In this analysis, an Optical Microscope (OM) was used to determine the microstructure of the shape of the solder coating microstructure. As dipping time and dipping speed increased, the interfacial IMC thickness was found to increase, grown up and getting thicker. This outcome results can be used as the basis in order to improve the solder joint properties.
PENERAPAN MODEL TSTS DAN CAROUSEL FEEDBACK UNTUK MENINGKATKAN EFIKASI DIRI DAN PRESTASI AKADEMIK SISWA
Authors: Ermalindus Albinus Joseph Sonbay
Published: March 2023

Kontroversi Pertambangan Berdasarkan Telaah Pembangunan Berkelanjutan dan Kajian Eko-Wisata untuk Menyelamatkan Ekologi. Pertambangan di NTT menjadi kontroversi karena terjadimanipulasi dan rekayasa kepentingan seputar hegemoni pertambangan mineral dan hasil alam.Kesejahteraan rakyat yang dijadikan alat propaganda justeru membungkus dengan indahnya keuntungan pribadi para pengusaha pertambangan dan juga pemerintahan daerah yang secara langsung menjadi naungan dan sandaran hukum dan politik para penguasaha tersebut. Pertambangan bukan sekadar urusan pemerintah dan koorporasi tambang, apalagi komunitas eksklusif pengusaha tambang. Pertambangan membutuhkan dialektika ide, cara, pola hingga rehabilitasi alam yang menggabungkan secara holistis dan mutlak, semua pemangku kebijakan (stakeholder), semua pemilik investasi dan modal (shareholders) dan yang terpenting semua masyarakat yang menghidupi areal sekitar, yang selama sekian waktu menikmati dan memenuhi kebutuhan hariannya dari alam. Melupakan salah satu elemen adalah membiarkan konspirasi yang menghancurkan visi ini secara bersama. Kerja sama yang integratif, terbuka dan terpercaya adalah sesuatu yang niscaya dalam dialektika ini. Karena, hanya dengan kerja sama ini transfer teknologi dan pengetahuan yang bisa memanusiakan manusia dan menjamin adanya kelanjutan lingkungan hidup dapat terjadi
Modified inertial Mann’s algorithm and inertial hybrid
Authors:   ", BAIYA SUPARAT ,   DEPARTMENT OF MATHEMATICS, FACULTY OF SCIENCE, NARESUAN UNIVERSITY, PHITSANULOK 65000, THAILAND", UNGCHITTRAKOOL KASAMSUK ,   "DEPARTMENT OF MATHEMATICS, FACULTY OF SCIENCE, NARESUAN UNIVERSITY, PHITSANULOK 65000, THAILAND AND RESEARCH CENTER FOR ACADEMIC EXCELLENCE IN MATHEMATICS, FACULTY OF SCIENCE, NARESUAN UNIVERSITY, PHITSANULOK 65000, THAILAND"
Published: March 2023

"In this work, we introduce and study the modified inertial Mann’s algorithm and inertial hybrid algorithm for approximating some fixed points of a k-strict pseudo-contractive mapping in Hilbert spaces. Weak convergence to a solution of fixed-point problems for a k-strict pseudo-contractive mapping is obtained by using the modified inertial Mann’s algorithm. In order to obtain strong convergence, we introduce an inertial hybrid algorithm by using the inertial extrapolation method mixed with the convex combination of three iterated vectors and forcing for strong convergence by the hybrid projection method for a k-strict pseudo-contractive mapping in Hilbert spaces. The strong convergence theorem of the proposed method is proved under mild assumptions on the scalars. For illustrating the performance of the proposed algorithms, we provide some new nonlinear k-strict pseudo-contractive mappings which are not nonexpansive to create some numerical experiments to show the advantage of the two new inertial algorithms for a k-strict pseudo-contractive mapping."
"Approximating fixed points of demicontractive mappings via the quasi-nonexpansive case"
Authors:   TECHNICAL UNIVERSITY OF CLUJ-NAPOCA, NORTH UNIVERSITY CENTRE AT BAIA MARE, DEPARTMENT OF MATHEMATICS AND COMPUTER SCIENCE, VICTORIEI 76, RO-430122 BAIA MARE, ROMANIA, BERINDE VASILE
Published: March 2023

"We prove that the convergence theorems for Mann iteration used for approximation of the fixed points of demicontractive mappings in Hilbert spaces can be derived from the corresponding convergence theorems in the class of quasi-nonexpansive mappings. Our derivation is based on an important auxiliary lemma (Lemma \ref{lem3}), which shows that if $T$ is $k$-demicontractive, then for any $\lambda\in (0,1-k)$, $T_{\lambda}$ is quasi-nonexpansive. In this way we obtain a unifying technique of proof for various well known results in the fixed point theory of demicontractive mappings. We illustrate this reduction technique for the case of two classical convergence results in the class of demicontractive mappings: [M\u aru\c ster, \c St. The solution by iteration of nonlinear equations in Hilbert spaces. {\em Proc. Amer. Math. Soc.} {\bf 63} (1977), no. 1, 69--73] and [Hicks, T. L.; Kubicek, J. D. On the Mann iteration process in a Hilbert space. {\em J. Math. Anal. Appl.} {\bf 59} (1977), no. 3, 498--504]."
A parallel method for common variational inclusion and common fixed point problems with applications
Authors:   ", MOUKTONGLANG THANASAK ,   ADVANCED RESEARCH CENTER FOR COMPUTATIONAL SIMULATION, CHIANG MAI UNIVERSITY CHIANG MAI 50200, THAILAND  AND DEPARTMENT OF MATHEMATICS, FACULTY OF SCIENCE, CHIANG MAI UNIVERSITY CHIANG MAI 50200, THAILAND", POOCHINAPAN KANYUTA ,   "ADVANCED RESEARCH CENTER FOR COMPUTATIONAL SIMULATION, CHIANG MAI UNIVERSITY CHIANG MAI 50200, THAILAND  AND DEPARTMENT OF MATHEMATICS, FACULTY OF SCIENCE, CHIANG MAI UNIVERSITY CHIANG MAI 50200, THAILAND", SUPARATULATORN RAWEEROTE ,   "DEPARTMENT OF MATHEMATICS, FACULTY OF SCIENCE, CHIANG MAI UNIVERSITY CHIANG MAI 50200, THAILAND"
Published: March 2023

In this paper, we construct a new parallel method to solve common variational inclusion and common fixed point problems in a real Hilbert space. We obtain a weak convergence theorem by using this method. Besides, numerical results on the signal recovery problem consisting of various blurred filters present that our proposed method outperforms the two previous methods.