bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamics of metabolic parameters of liposuction: physical rating, basal metabolic rate and metabolic age
Authors: Khramtsova N. I. , Plaksin S. A. , S. A. Yu. , Ponomarev D. N.
Published: July 2022

The purpose: To analyze the possibilities of usage and the dynamics of such metabolic parameters as physical rating, basal metabolism and metabolic age, in evaluating the results of liposuction.
Materials and methods. The following body composition indicators were measured: physical rating, basal metabolism, and metabolic age. The study included 26 relatively healthy women before liposuction, immediately after the surgery and on the 7th day after it, which were measured with Tanita BC-542 two-electrode body composition analyzer. The significance of differences was assessed using the Wilcoxon test with an error value of p 0.05.
Results. The physique rating immediately after liposuction in 3 (11%) patients improved, remaining on the 7th day, in one (4%) woman it has deteriorated. In 22 (85%) women it has not changed. The basal metabolic rate in patients on admission was 1333 (1265-1407) kcal. After liposuction it increased to 1340 (1289-1394) kcal (p = 0.02), on the 7th day - 1357 (1319-1482) kcal (p = 0.04). Metabolic age on admission in 14 (54%) patients was less than actual, in 1 (4%) woman in matched, in the remaining 11 (42%) it was more than the actual. Immediately after liposuction, the metabolic age corresponded to the actual in 6 (23%) patients, in 13 (50%) it was less than the actual age, in the remaining 7 (27%) it increased. On the 7th day the metabolic age in 16 (89%) decreased, while in the remaining 2 (11%) it did not change. On the 7th day it neither increased.
Conclusions. In most patients, metabolic rates improved after liposuction, but in one case, the "deterioration" of physique rate was recorded. The procedure for measuring metabolic parameters in estimating the results of liposuction requires improvement.
New-onset type ii diabetes mellitus in early diagnosis of pancreatic cancer: literature review
Authors: Ponomarev P. A. , Moiseenko V. E. , Pavlovsky A. V. , Popov S. A. , Turlak A. S. , Granov D. A.
Published: July 2022

The literature data on the connection between type 2 diabetes mellitus (DM) and pancreatic cancer (PC) were analyzed. Early detection of pancreatic cancer remains an unsolved problem of oncology because of absence of pathognomonic symptoms for this disease at the early stages, difficulties in visualizing changes in the pancreas as well as difficulties in differential diagnosis with benign tumors. Fifty nine articles in Russian and English were studied, and the data presented in literature regarding the connection between type 2 diabetes mellitus and early stages of pancreaticic cancer have been analyzed.Resectable pancreatic cancer makes up less than 15 % of the cases during initial medical examination. Currently, the existing methods of diagnostics do not allow solving the problem of early detection of pancreatic cancer it dictates the need to search for a new marker that will improve the early diagnosis of this tumor. According to the results of many studies, there has been detected a connection between the new-onset type 2 diabetes mellitus and early stages of pancreatic cancer. Based on the data published by a number of authors, manifestation of the new-onset type 2 diabetes mellitus in patients over fifty (fasting blood glucose level 7 mmol/L, or a blood glucose sugar level 11,1 mmol/L after performing oral glucose tolerance test, or random blood glucose level 11,1 mmol/L with a typical hyperglycemia signs and symptoms) can serve as an early symptom of pancreatic cancer.

Thus, the new-onset type 2 diabetes mellitus in persons aged 50 years or older can potentially be used to identify a group of patients requiring a directional examination for the purpose of early detection of pancreatic cancer. Further studies on this problem could allow us to formulate a special program of early diagnostics of pancreatic cancer.
Current medical and social aspects of tobacco and nicotine-containing products consumption in adolescents
Authors: Melnikova I. M. , Dorovskaya N. L. , Dmitrieva A. P. , Mizernitskiy Yu. L.
Published: July 2022

Objective. To determine the trends in the structure and assess medical, social and clinical aspects of the consumption of tobacco and nicotine-containing products among adolescents aged 1417. Material and methods. During the study, 352 adolescents aged 14 to 18 years studying in urban (n = 202) and rural (n = 150) schools of Yaroslavl region were surveyed in 20202021. Statistical processing of the data was carried out using computer programs "Statistica" v.10.0. Results. The survey of teenagers revealed a fairly high prevalence not only of active tobacco smoking (tried 37 %, actively smoked 30 % of adolescents), but also the use of "new" nicotine-containing products (vape, hookah, electronic cigarettes, snus, snuff) (tried 38 %, actively used 7 % of teenagers). The structure of active tobacco use and NRTI use was found to differ by the place of residence. Active tobacco use accounted for 46.7 % of rural adolescents and 19.8 % of urban residents (p 0,01). Conclusions. In modern adolescents, along with tobacco smoking, a negative trend has been detected to increase the use of nicotine-containing products, especially hookah. This substantiates the need to improve educational anti-nicotine programs, to introduce a system of regular regional monitoring of the prevalence of traditional and new nicotine-containing products use among children and adolescents in order to make quick and effective decisions.
Clinical usability of morning surge blood pressure for predicting future hypertension in a young population
Authors: Ozgeyik Mehmet , Yildirim Ozge Turgay , Ozgeyik Mufide Okay , Yildirim Selim
Published: July 2022

Objective    Early diagnosis of hypertension (HT) is a critical issue for physicians. This study was conducted to determine if morning surge blood pressure (MSBP) could be used to predict future HT. The study also examined which demographic data in a regression model might help to detect future HT without any invasive procedure.Material and methods    A young population between 18 and 40 yrs of age was included in the study. MSBP and demographic data were used to determine an optimal model for predicting future HT by using Bayesian information criteria and binary logistic regression.Results    1321 patients with 24 hr ambulatory blood pressure monitoring were included in this study. The odds ratio of 10 units of increase in diastolic MSBP was 1.173511 in the model, which indicates that a 10 mmHg increase in diastolic MSBP increases the odds of future HT in the patient by 17.4 %. The odds ratio of age was 1.096365, meaning that at each age above 18 yrs, the patients’ odds of future HT rise by 9.6 %. The odds ratios for gender (male) and previous HT were 1.656986 and 3.336759, respectively. The odds of future HT in males were 65 % higher than for females, and a history of HT implies that the odds of future HT were higher by 230 %.Conclusion    Diastolic MSBP can be used to predict HT in young individuals. In addition, age, male gender, and previous HT add more predictive power to diastolic MSBP. This statistically significant, predictive model could be useful in lessening or preventing future HT.
Influence of community dialogues on social accountability in the health system in Nairobi County, Kenya
Authors: Abuga Malkia M. , Tenambergen Wanja M. , Njoroge Kezia M.
Published: July 2022

Background: Social accountability encompasses a variety of strategies that enable citizens to express their concerns about the performance of health-care services. Community dialogues provide a forum for community engagement and participation in the health care system. However, there is little documentation on how it is used to improve social accountability within government community health structures. The purpose of this study was to determine the influence of community dialogues on social accountability in Nairobi County, Kenya.Methods: A qualitative study was conducted that included in-depth interviews with key stakeholders purposively selected. A total of three focus group discussions with 23 participants, eight key informant interviews and document review of minutes were conducted. Data analysis was done using thematic analysis.Results: Findings showed that community dialogues were held quarterly. The forums were mostly used for education purposes with little evidence on community engagement. Minutes showed what the community health assistant and community health volunteer said to the community with minimal input from the community members. Feedback was a challenge because the health management team hardly attended community dialogues due to logistic and workload issues.Conclusions: There is need of practical strengthening community dialogues through use of tools like chalk board and community scorecard as advocated in the community health policy. However, in practice, these tools were hardly used resulting to missed opportunity for the community to voice their opinions on health services.
Three-dimensional (3D) printing: A potentially versatile tool in the field of medicine
Authors: Bhanakar Ujwala , Pal Amit Kumar , Ray Biswabina
Published: July 2022

Three-dimensional (3D) printing or additive manufacturing, is a relatively recent and rapidly evolving technology that has a far-reaching impact in the current context of medical education. Since its introduction in the 1980s, additive manufacturing has made tremendous progress. In essence, this technology render a computer-assisted design template based on a set of processed data acquired from various imaging sources such as 3D scanning, computed tomography (CT) and Magnetic resonance imaging (MRI), into a physical object which is an accurate representation of the original. The printing is constructed in layers using a diverse array of printing materials. The process is fast, easy, cost-effective, and repeatable. The scopes of application of 3D-printing are increasing by the day with limitless potential in future. Proper implementation of 3D printing with respect to its availability and accessibility will establish it as a perfect complementary modality to the traditional teaching and learning approaches. In this review paper, the concept of 3D printing, its use in medical education, surgical training, patient interaction, potential benefits and shortcomings, and future scope are highlighted.
Knowledge, attitude, and feedback of students regarding the orientation program at R.D. Gardi Medical College, Ujjain, Madhya Pradesh, India
Authors: Goothy Sai Sailesh Kumar , Choudhary Anita
Published: July 2022

The orientation program gives information about the course curriculum, future opportunities, campus details and facilities available for students, various learning methods, coping with stress, and mental health.

The present study was undertaken to observe the students’ knowledge and attitude and to obtain their feedback regarding the orientation program.

A total of 106 participants responded to the knowledge and attitude questionnaire and a total of 111 participants responded to the feedback questionnaire. Knowledge and attitude were assessed before and after the orientation program. Feedback was assessed after the orientation program.

There was an improvement in the knowledge mentioned by the participants after attending the orientation program. The majority of the participants gave positive feedback about the orientation program. Majority of the participants reported that the orientation program improved not only their knowledge about academics but also the management of their mental and emotional health.

The present study results present the positive impact of the orientation program on medical students. The study results support the implementation of the orientation program for the benefit of medical students in general.
Study of suprascapular notch converted into a foramen in adult human scapulae in Karnataka region
Authors: Ravikumar V  , Siri AM
Published: July 2022

Scapula is a triangular bone present in the back, which articulates with the humerus and clavicle forming the shoulder girdle. In the superior border of the scapula there is a notch called the suprascapular notch, through which the suprascapular nerve pass. The suprascapular nerve can be compressed by the ossified part of the transverse scapular ligament a cause for neuropathies.

The present study was done on adult scapulae in department of Anatomy SUIMS & R.C. Shimoga, where the transverse scapular ligament [TSL] was ossified in 10 scapulae out of 127 adult dry scapulae [7.87%] studied of unknown sex. It was also noted that 6 out of 10 scapulae belonged to the right side & 4 to left side showing a slight preponderance to the right side. Incidence of the complete suprascapular foramen varies from one geographical region to other region, work nature of indivisuals and is variable with the samples collected by different workers for the study.

The compresssion of the suprascapular nerve is an acquired neuropathy leading to neuromuscular deficits and decrease in the range of motion of the shoulder. Suprascapular nerve blocks are given in this region. The knowledge of this type of nerve compression is helpful for evaluation of patients with neurovascular deficits to orthopedicians, radiologists, anaesthetists and surgeons in their clinical practice.
Influence of Limestone Fillers on Rheological and Mechanical Performance of Concrete
Authors: Lyamine Briki , Loucif Ali Bouacida , Noureddine Lahbari
Published: July 2022

This article reports the study of the impact of the addition of 0/80 mm limestone fillers on the workability and strength of ordinary concretes. Its aim is to develop sands containing a high rate of fillers available in large quantities in Algeria and to identify the possible proportions that can be introduced without compromising the quality of the concrete. The study consists of gradually inserting a rate of fillers of 0, 6, 12, 18 and 24% in the cement mixes. The variation was studied by maintaining a constant maneuverability. Physical and mechanical, microstructural properties of durability were studied. The results obtained showed that the concretes are very influenced by the addition of fillers and highlight the existence of an optimum rate of performance. The addition of a high percentage of fines (up to 18%) does not seem to affect the mechanical and hydraulic characteristics of the concretes.
Arsenic and Salinity Affected Groundwater in South-Western Bangladesh: An Assessment of Managed Aquifer Recharge and Sub-Surface Arsenic Removal as Mitigation Techniques
Authors: Rahman Md Mahfujur , Hasan M. Aziz , Ahmed Kazi Matin
Published: July 2022

Naturally occurring groundwater arsenic contamination is a major problem in Narail, Bangladesh. Analyses of 32 groundwater samples showed arsenic concentrations ranged 20.33–158.90 µg/L. Relatively deeper aquifer (>45 m depth) in addition to arsenic, is contaminated with substantial amount of salinity. Electrical conductivity (EC) ranged 1.01–7.90 mS/cm indicating the enormity of salinity. The groundwater is mainly Na–Cl to Na–HCO3 type, and is SO4 limited. This research demonstrates the effectiveness of two mitigation techniques (i) managed aquifer recharge (MAR) and (ii) sub-surface arsenic removal (SAR) for in-situ salinity and arsenic treatment of contaminated groundwater. A two-year long experiment revealed that the MAR system was effective in reducing both salinity and arsenic. Groundwater EC reduced 72–81% from an initial value of 3.4 mS/cm to less than 1 mS/cm. Arsenic concentration dropped below 50 µg/L from an initial concentration of 100 µg/L. The SAR system reduced arsenic concentration below 50 µg/L from an initial concentration of 100 µg/L. The system was capable of yielding 1500 liters of arsenic safe water when injected volume of oxygen saturated water was 2000 liters indicating 70–80% recovery. Both systems can provide 1000 liters of safe drinking water at a cost of $2.00.
An Active Anti-Aging Technology for Asphalt Mixture
Authors: Lin Zhi , Liu Baoxiang , Qiu Zhou , Zheng Chuanfeng , Luo Haisong , Liu Wenyue
Published: July 2022

For aged asphalt, as the content of light component gets smaller with the passing of time, the performance of the asphalt mixture would degrade accordingly. This study aims to develop an anti-aging material that can supplement light component to asphalt pavement during its service process, thereby suppressing the aging of asphalt and prolong the service life of the road surface. At first, this study carried out four-component separation test to measure the loss mass of light component; then in the experiment, the oil shale wastes were impregnated in light component to determine its adsorption capacity to the light component. After that, according to the loss of asphalt light component after long-term aging and the adsorption ratio of anti-aging materials with different particle sizes for light component, the amount of anti-aging material to be added was determined; moreover, via rutting test, beam bending test, and freeze-thaw splitting test, the high-temperature stability, low-temperature crack resistance, and water stability of the asphalt mixture modified by the proposed anti-aging material had been verified, and the results proved that the proposed anti-aging material can well suppress the aging of asphalt mixture.
Formation and development of the state healthcare system in Tsaritsyn – Stalingrad province in the 1920s
Authors:   Volgograd State University, Yudina Taisiya V.
Published: July 2022

The article analyzes the issues of organization of medical care for the population of Tsaritsyn – Stalingrad province in the 1920s. The difficulties of the health authorities in reducing infectious diseases, improving the quality of medical care, as well as the actions and measures taken by them to develop state medicine were noted. The article is based on archival materials introduced into scientific circulation for the first time.
​Production and Characterization of Biodiesel from Fatty Residues of Capra hircus
Authors: Ragade Vinod R. , Phadtare Shekhar , Kharat Kiran R. , Kharat Amol , Achary Preetha , Kengar Ajit
Published: July 2022

Background: Non-vegetarian food (meat, chicken and beef) slaughtering is one of the world’s most rapidly increasing food industries. The wastes produced in the slaughterhouse are rapidly causing unhygienic conditions and pollution in and around the civil area. In this way, while meeting the food requirement of people, it is also causing a threat to health. Using natural resources is one of the essential innovations in producing energy. Biodiesel is a valuable renewable energy source because it is biodegradable and non-toxic. Methods: This study aims to upgrade the reformation of fat residues of Capra hircus into biodiesel by using 0.96% wt KOH as a catalyst. The waste organs, including stomach, skin and fatty residues, were brought locally in the meat shop. Fat contents were extracted in ethyl alcohol from the waste organs through the Soxhlet apparatus and purified with a rotary evaporator. The crude biodiesel was obtained from animal fat through a trans-esterification reaction. The animal fat and crude biodiesel sample were quantitatively analyzed using FT-IR spectroscopy. Result: In the fat sample range of peak value between 3552.28 to 2974.23 cm-1 is recognized to-C=CH (C is double bond stretching) was represented to monounsaturated fatty acid (MUFA). Furthermore, the crude biodiesel is monitored by the intensity of the C-O ester Peak at 1742.72 cm-1. Finally, we concluded that obtained sample via trans-esterification reaction is biodiesel.
Effect of Herbal Feed Additives Fenugreek (Trigonella foenum-graecum) Seed Powder and Onion (Allium cepa) Powder on Haemato-biochemical and Carcass Characteristics of Broilers
Authors: Yadav Kundan Mal , Joshi Monika , Sharma S.K. , Shende K.A. , Gurjar M.L. , Meel M.S.
Published: July 2022

Background: The positive effect of fenugreek and onion and their active components on the digestion process has been reported in several studies. The present experiment was conducted to study the effect of supplementation of Fenugreek sees powder and Onion powder on haemato-biochemical and carcass charactistics of broilers. Methods: Day-old, 210 broiler chicks (Vencobb-400) were randomly allotted to seven treatment groups. The T1 i.e., control group was fed on basal diet, while, group T2 and T3 were supplied with 1% and 2% fenugreek seed powder, respectively. Whereas group T4 and T5 were supplied with 1% and 2% onion powder, respectively and group T6 and T7 were supplied with 0.5% fenugreek seed powder and 0.5% onion powder and 1% fenugreek seed powder and 1% onion powder, respectively in the basal broiler pre-starter, starter and finisher ration. Result: Haemoglobin, PCV, TEC, TLC, total serum protein and creatinine levels were higher (P less than 0.01) in T6 group while highest level of blood glucose was found in T6, but the variation was statistically non-significant for blood glucose. Whereas serum cholesterol level was higher (P less than 0.01) in control group. Non-significant effect was observed on dressing percentage but numerically highest in T6 group and eviscerated weight percentage was higher (P less than 0.05) in T6 group. The gizzard (P less than 0.01), heart (P less than 0.01) and giblet weight (P less than 0.01) were found statistically higher in T5 and liver weight (P less than 0.01) was statistically higher in T7 group.
Influence of Plant Growth Regulators on Growth, Yield and Yield Components in Garden Pea
Authors: Choudhary Rajesh , Singh B.K. , Choudhary Ashok , Jat S.K. , Choudhary Anita , Bajia R.
Published: July 2022

Background: Garden pea is one of the most important legume crop which require proper crop management practices. Crop regulation is an important practices which enhancing the productivity of garden pea with higher economic return. This can be done by adopting proper application of PGRs. Therefore, the present study was designed to assess the effect of PGRs on growth and yield of garden pea. Methods: The present study was laid out on garden pea (Pisum sativum subsp. hortense) cv. Azad Pea-3 in a randomized block design with three replications and ten treatments comprising different levels NAA, GA3 and Salicylic acid at various stages. The data on growth and yield were recorded and analyzed statistically applying the analysis of variance technique. Result: Results revealed that the plants treated with 120 ppm gibberellic acid showed 45.39% 38.55%, 40.60% and 32.84% increment in plant height, length of pod, width of pod and number of seeds per pod and taken lowest number of days to 50% flowering over control, respectively. The use of 40 ppm NAA exhibited maximal enhancement in number of pods per plant (57.43-68.02%), seed weight per pod and Pod yield per hectare (50.62-60.26%) over remaining treatments. Conclusively, the results suggest that foliar application of PGRs favors the growth and yield of garden pea.
​Induction of Systemic Resistance against Phytophthora Blight in Pigeonpea Through the Interaction of Plant Growth Promoting Rhizobacteria: In vivo and in vitro Study
Authors: Bala Saroj , Singh Aamni , Khanna Veena
Published: July 2022

Background: Phytophthora blight (PB), caused by Phytophthora drechsleri f. sp. cajani, is soil borne disease of pigeonpea (Cajanus cajan L.). The use of plant growth promoting rhizobacteria (PGPR) in agriculture leads to alternative disease management of crop in a sustainable ecofriendly way. Methods: In vitro and in vivo experimentation was conducted at fields of Punjab Agricultural University, Ludhiana during kharif season of 2017-18 to study the percentage of blight inhibition by rhizobacteria and production potential in pigeonpea. The present study consisted of 6 treatments of dual inoculation of antagonistic bacteria with recommended rhizobium of PAU (LAR-06). Result: The selected rhizoisolates were studied against Phytophthora drechsleri caused stem blight of pigeonpea. The allelochemicals and plant growth promoting rhizobacteria traits involved in antagonistic behavior significantly inhibited the growth of the test fungus. Scanning electron microscopy between potential rhizoisolates and test fungus revealed intumescent hyphae with irregular cell surface morphology. The synergistic effects of LAR-06 + S-2 and LAR-06+ S-18 were found to be the most potent ones in inhibiting the radial growth of the test pathogen with increased yield production in the field as well as greenhouse conditions.
Fluid and Electrolyte Management in the Neonate
Authors: Moss Colleen Reilly
Published: July 2022

Maintenance of electrolyte balance in the neonate is challenging in the context of illness or prematurity. Imbalances in potassium and phosphorus can occur in neonates, ranging from benign and clinically insignificant to those that can be life-threatening. An individualized approach to fluid and electrolyte management is based on the neonate’s gestational age, day of life, maintenance needs, deficits, and ongoing losses. This article reviews normal and abnormal potassium and phosphorus values along with management strategies. Using a case scenario, the reader can apply concepts outlined in this article to management of critically ill neonates with electrolyte disturbances.
Step 3, Critically Appraising Evidence
Authors: Givens Bell Susan
Published: July 2022

Critical appraisal of the evidence is the third step in the evidence-based practice process. This column, the third in a multipart series to describe the critical appraisal process, focuses on critical appraisal of randomized control trials.
Colombia y una educación en emergencia: innovación, pandemia y TIC
Authors: Largo-Taborda Wilson Alejandro , López-Ramírez María Ximena , Guzmán Buendía Eddy Mackniven , Posada Hincapié Carlos Andrés
Published: July 2022

This paper addresses how education in emergency contexts becomes a scenario of change and transformation. Educational institutions, teachers, principals, students, and parents are called upon to develop innovation and curricular adaptation processes. It is evidenced that public policies on emergency education are not very comprehensive and do not meet the objective of providing quality education. It is observed that education requires adaptation, updating, and the inclusion of processes that transcend the implementation of ICT tools or virtuality. For this reason, it is necessary to create scenarios that enable teachers to improve their pedagogical practices and develop innovative practices that are subject to meeting and responding to the needs of education in emergencies.
Identidades de docentes empíricos en servicio en un programa de educación ETL
Authors: Castañeda-Trujillo Jairo Enrique , López Andrés Felipe , Molina Santana Mónica
Published: July 2022

This article aims to show a narrative study on the (re)construction of the identity of empirical in-service teachers who are in the last semester of the Virtual Bachelor of English Language Teaching at a private university in Bogotá, Colombia. After analyzing the two participants’ experiences, collected through semi-structured interviews, three categories emerged: Sense of belonging; Giving my 100%, and Expectations. The main research findings were that empirical in-service teachers identified themselves as teachers based on their ideas based on experience and that professional education has served primarily as a way to improve and find better job opportunities. We conclude that the participants shaped their identity based on their empirical teaching experience rather than their professional training.
Memorias sobre la formación de los movimientos sociales en el sur de Bahía, Brasil: la importancia de la educación en la construcción de los sujetos políticos y los proyectos de futuro
Authors: Gomez Pereira Marcella , Rocha Melo de Lucena Emerson Antônio , Ferreira Marta Felipe Eduardo , Silva de Farias Edson
Published: July 2022

Memories are natural attributes of collective and spontaneous activities, which dialogue in the construction of identities. The memories that act in constructing the identity of the social movements are a process of repetition accompanied by differences. These movements have employed efforts in elaborating pedagogical projects that aim at constructing a political and social identity of their collaborators through a libertarian/liberator education. In this context, using Oral History as a research methodology, the article aims to analyze the memories of the construction of the educational process implemented in the agrarian reform settlements, the theoretical currents used, and the efficiency of this process in the formation of peasant youths and adults.
Estrategias de inclusión dirigidas a estudiantes sordos de la Corporación Universitaria Iberoamericana
Authors: Balvin Rendón María Camila , Luna Alarcón Santiago , Vera Barrios Marly
Published: July 2022

This research was carried out in order to know what inclusion strategies aimed at deaf students implements the Ibero-American University Corporation, as this will allow to establish knowledge and awareness about these strategies, and about the inclusion program in the institution. This research is of a qualitative methodology with an ethnographic approach. Data collection was obtained through a semi-structured interview with different actors involved in these processes of inclusion of the deaf person, and through a search of documentary origin, which allowed later to obtain a collection of data that were organized and categorized. The paper ends later with the analysis of the results and a discussion based on them.
PENGARUH MEDAN MAGNETIK EKSTERNAL PADA TABUNG GAS HIDROGEN TERHADAP SPEKTRUM EMISI PADA EFEK ZEEMAN
Authors: Setyawarno Didik , - Supahar
Published: July 2022

Telah dilakukan penelitian dengan tujuan mengetahui apa yang akan terjadi ketika spektrum garis emisi yang dipancarkan oleh tabung gas elektron atom hidrogen pada panjang gelombang tertentu dilewatkan dalam medan magnetik eksternal. Penelitian ini di analisis dengan cara nonkuantitatif yaitu membandingkan antara tanpa medan dan dengan medan magnetik eksternal. Berdasarkan hasil penelitian yang telah dilakukan diperoleh hasil, yaitu spektrum emisi dari gas hidrogen yang dilewatkan pada medan magnet eksternal maka spektrum tersebut berubah intensitasnya. Semakin besar medan magnetnya semakin besar intensitas yang dipancarkannya, hal ini menunjukan bahwa   di mana  semakin besar medan magnetik yang digunakan semakin besar pula jarak perpecahan garis spectral .
PENGEMBANGAN MODUL MULTI REPRESENTASI BERBASIS KONTEKSTUAL PADA MATERI FLUIDA STATIS UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS
Authors: Permadi Dimas , Setyaningsih Kris
Published: July 2022

Penggunaan media pembelajaran dapat membantu penyampaian informasi.Penyampaian informasi dapat diterima dengan baik jika menggunakan multi representasi.Tujuan dari penelitian ini adalah untuk mengetahui karakteristik dan kelayakan modul multi representasiberbasis kontekstual dan mengetahui peningkatan kemampuan berpikir kritis peserta didik setelah menggunakan modul multi representasi berbasis kontekstual.Penelitian ini menggunakan metode Research and Development(R & D) mengacupada Puslitjaknov (2008) yang memiliki lima tahapan yaitu: (1) melakukan analisis produk yang akandikembangkan, (2) mengembangkan produk awal, (3) validasi ahli dan revisi, (4) uji coba lapangan skalakecil dan revisi produk, (5) uji coba lapangan skala besar dan produk akhir.Desain penelitian menggunakan One-Shot Case Studydengan variabel bebas penggunaan modul multi representasi dan variable terikat adalah kemampuan berpikir kritis peserta didik.Modul multi representatif tersebut disusun dengan berbagai gambaran baik verbal, visual, grafik, dan audio.Instrumen pengumpulan data yang digunakan adalah lembar validasi dan soal tes kemampuan berpikir kritis.Teknik analisis data yang digunakan dibagi menjadi tigayaitu: 1)analisis data analisis kebutuhan yang dideskripsikan, 2) analisis lembar validasi dengan menabulasi semua komponen data yangdiperoleh, mengitung skor rata-rata dari setiap komponen dan mengkategorikannya,dan 3)analisis data tes kemampuan berpikir kritis dihitung berdasarkan gain ternomalisasi.Hasil penelitian menunjukkan: 1) karakteristik modul adalah dengan menggunakan pendekatan kontekstual yang sesuai dengan komponen-komponenya dan menggunakan beragam representasi seperti ilustrasi, verbal, persamaan matematik, visual, dan audio. 2) kelayakan modul dilihat dari rata-rata nilai ideal (81,5%) ≥ nilai cut off (79,5%). 3) peningkatan kemampuan berpikir kritis peserta didik setelah menggunakan modul multi representasi berbasis kontekstual memiliki kriteria sedang dengan gain sebesar 0,45.
¬¬¬ANALISIS KUANTITATIF PEMAHAMAN KONSEP FISIKA PADA MATERI LISTRIK DAN MAGNET DENGAN INSTRUMEN MCS PADA MAHASISWA PENDIDIKAN FISIKA UNIVERSITAS SRIWIJAYA
Authors: Nasir T. , Akhsan H.
Published: July 2022

Penelitian ini bertujuan untuk menganalisis pemahaman konsep dan miskonsepsi  mahasiswa Pendidikan Fisika Universitas Sriwijaya pada materi listrik dan magnet. Data dikumpulkan menggunakan tes MCS (Magnetism Concept Survey), CRI (Certain of Response Index), dan wawancara yang dilakukan untuk menggambarkan tipe pemahaman konsep mahasiswa. Metode analisis data menggunakan teknik deskriptif kualitatif. Hasil penelitian adalah didapatkan rata-rata pemahaman konsep mahasiswa sebesar 14,4%. Berdasarkan analisis CRI didapatkan sebanyak 14,4% mahasiswa paham konsep, 57,7% kurang pengetahuan, dan 27,9% mengalami miskonsepsi. Miskonsepsi tertinggi yang dialami mahasiswa adalah pada sub konsep arah medan magnet di dalam dan di luar magnet batang yaitu sebesar 86,4%. Penelitian ini merupakan penelitian dasar untuk penelitian lanjutan untuk meningkatkan pemahaman konsep dan mengatasi miskonsepsi yang dialami mahasiswa.
Studi Penguasaan Konsep Vektor dalam Penyelesaian Berbagai Persoalan Fisika pada Perkuliahan Fisika Dasar
Authors: Mabruroh Faizatul
Published: July 2022

Penelitian ini bertujuan untuk mengetahui penguasaan konsep vektor dalam penyelesaian berbagai persoalan fisika pada perkuliahan Fisika Dasar di Program Studi Pendidikan Fisika UIN Raden Fatah Palembang. Dalam penelitian ini dibatasi pada permasalahan yaitu bagaimana kemampuan mahasiswa menerapkan (aplikasi) konsep vektor dalam penyelesaian berbagai persoalan fisika pada konsep operasi aljabar vektor, gerak dan gaya, kesetimbangan, dan medan listrik. Penelitian dilakukan terhadap 22 orang mahasiswa semester I tahun akademik 2017/2018. Sebagai alat pengumpul data digunakan instrumen penelitian Tes Penerapan Vektor berupa soal-soal berbentuk essay/uraian sebanyak 8 soal. Hasil penelitian menunjukkan bahwa kemampuan mahasiswa dalam menghitung operasi dasar aljabar vektor sebesar 62,6%, untuk kemampuan dalam menggambarkan resultan vektor dengan metode grafis sebesar 40,5%, kemampuan dalam menggambarkan diagram benda bebas menggunakan pemahaman konsep penguraian vektor sebesar 24%, kemampuan dalam menggunakan rumus yang sesuai untuk setiap persoalan konsep vektor sebesar 44,83%, kemampuan menghitung dan menguraikan jawaban sebesar 41,6%, kemampuan dalam menunjukkan langkah pengerjaan soal secara baik sebesar 24,2%, dan kemampuan menerapkan  serta menggunakan konsep vektor secara baik pada setiap persoalan konsep yang ditanyakan sebesar 37,7% . Secara keseluruhan, mahasiswa cenderung mengalami kesulitan dalam menerapkan konsep vektor dalam berbagai perhitungan konsep lain dalam fisika.
ORIENTASI GERAK JATUH BEBAS PADA SISTEM TIGA PARTIKEL
Authors: Pebralia Jesi
Published: July 2022

Partikel merupakan objek yang memiliki massa, posisi, kecepatan, serta terpengaruh oleh gaya, tetapi tak berdimensi ruang. Namun kumpulan sistem partikel bisa menjadi sistem yang memiliki dimensi ruang. Berdasarkan penjelasan tersebut, struktur massa nonrigid dapat didekati dengan menggunakan sistem N partikel yang dihubungkan oleh beberapa "pegas" sederhana. Terdapat-benda-benda riil yang cenderung jatuh pada orientasi tertentu, trajektori gerak jatuh bebas sistem massa nonrigid ini relatif berbeda dengan gerak jatuh bebas partikel sederhana. Paper ini mensimulasikan gerak suatu benda yang tersusun oleh sistem partikel dimana distribusi massa, efek konstanta pegas, dan gesekan udara merupakan aspek penting yang harus diperhitungkan. Dilakukan juga perbandingan antara gerak pusat massa sistem massa nonrigid dengan gerak partikel sederhana. Diperkirakan semakin heterogen distribusi massa sistem partikel, orientasi gerak benda akan semakin acak.
PERHITUNGAN ANALITIK ALGORITMA GROVER
Authors: Suhadi Suhadi
Published: July 2022

Telah dilakukan perhitungan secara analitik ulang algoritma Grover pada komputasi kuantum untuk pencarian data dalam suatu basis data. Selain itu, dengan hasil juga diberikan hasil dari perhitungan numerik bahwa pencarian/query pada basis data data tak terurut dengan kompleksitas waktu O (N)
Pengaruh Jenis Serat Alam Terhadap Koefisien Absorpsi Bunyi Sebagai Peredam Kebisingan
Authors: Mutia Putri , Ngatijo Ngatijo , Fahyuan Helga Dwi
Published: July 2022

Telah dilakukan penelitian mengenai pengaruh jenis serat alam yang berbeda yaitu serat ampas tebu, serat sabut kelapa dan serat buah bintaro terhadap koefisien absorpsi bunyi dengan menggunakan metode tabung impedansi. Sampel yang digunakan yaitu material akustik dengan massa serat 0,3 gr. Rentang frekuensi yang digunakan adalah 500, 1000, 2000 dan 4000 Hz. Hasil penelitian menunjukkan bahwa semakin kecil ukuran partikel serat maka semakin tinggi nilai koefisien absorbs bunyi dan semakin tinggi tingkat porositas permukaan sampel yang digunakan maka semakin tinggi nilai koefisien absorpsi bunyipada material komposit serat ampas tebu dengan massa 0,3 gr dan serat sabut buah kelapa dengan massa 0,3 gr frekuensi 500 Hz. Densitas material dengan kerapatan yang baik digunakan berkisar 0,4 gr/cm3 – 0,9 gr/cm3, penelitian ini menghasilkan nilai densitas yang tinggi =1,29 gr/cm3. Hal tersebut didukung oleh jumlah matriks yang cukup banyak yaitu 20 gr sehingga menghasilkan kerapatan yang tinggi, koefisien serapan material komposit yang memiliki permukaan berpori dan selaput sebagai jalur keluar masuknya udara sehingga meningkatkan nilai koefisien absorpsi.
Upaya Meningkatkan Aktifitas dan Hasil Belajar Fisika Siswa Kelas X Melalui Penugasan Catatan TS (Tulis dan Susun)
Authors: Fitriana Sheila
Published: July 2022

Kurangnya keaktifan siswa dan rendahnya hasil belajar siswa pada mata pelajaran Fisika menyebabkan rendahnya tingkat kelulusan siswa dalam batas standar ketuntasan minimal  Di samping itu, metode yang digunakan oleh guru kurang variatif dan membosankan. Oleh sebab itu dilakukan sebuah penelitian dengan tujuan meningkatkan aktivitas dan hasil belajar Fisika siswa kelas X melalui penugasan catatan TS (tulis dan susun). Jenis penelitian yang digunakan adalah Penelitian Tindakan Kelas (PTK) dengan prosedur penelitian dilakukan secara bersiklus yaitu dimulai dari perencanaan tindakan, observasi tindakan, dan refleksi. Adapun objek penelitian ini adalah siswa SMA Pertiwi 1 Kelas X4 sebanyak 39 orang. Teknik pengumpulan data penelitian ini adalah dengan menggunakan lembar observasi, tes, dan angket. Hasil penelitian ini menunjukkan pembelajaran Fisika yang dilakukan dengan menggunakan  penugasan catatan TS menjadikan siswa semakin aktif dan kreatif dalam pembelajaran. Hal ini terlihat dari aktivitas siswa yang terus meningkat dari siklus I ke siklus II. Pada siklus I, sebagian besar kadar keaktifan siswa berada pada skala rendah yaitu di skala 1 dan skala 2, sedangkan pada siklus II terjadi peningkatan dimana aktivitas siswa sebagian besar berada pada skala 3 dan 4. Hasil belajar siswa  mengalami peningkatan dari siklus I ke siklus II. Hal ini dilihat dari persentase ketuntasan belajar yang dipoeroleh pada siklus I yaitu 20,5% dan mengalami peningkatan pada siklus II sehingga persentase ketuntasan yang diperoleh menjadi 66,67%.
ANALISIS LEVEL PEMAHAMAN SISWA PADA KONSEP USAHA DAN ENERGI MELALUI PENERAPAN PEMBELAJARAN KONSEPTUAL INTERAKTIF DENGAN PENDEKATAN MULTIREPRESENTASI
Authors: Patriot Evelina Astra
Published: July 2022

Penelitian ini bertujuan untuk mendapatkan gambaran analisis level pemahaman konsep siswa melalui penerapan pembelajaran konseptual interaktif dengan pendekatan multirepresentasi pada materi usaha dan energi. Metode penelitian yang digunakan dalam penelitian ini adalah pre-experiment dengan desain penelitian yang digunakan adalah one-group pretest-postest. Subjek dalam penelitian ini adalah 35 siswa kelas X MIA 1 di salah satu SMA Negeri Sumedang. Penelitian ini menggunakan perangkat instrumen tes pemahaman konsep. Hasil penelitian menunjukkan adanya peningkatan level pemahaman siswa setelah mendapatkan penerapan pembelajaran. Persentase tertinggi pada level MSU konsep usaha dan energi pada permainan ketapel terjadi peningkatan sebesar 61% sedangkan peningkatan persentase terendah pada level MSU yaitu konsep usaha dan energi pada aplikasi olahraga lompat galah yaitu sebesar 51%. Hasil secara umum, hampir seluruh siswa memberikan tanggapan yang positif terhadap penerapan pembelajaran konseptual interaktif dengan pendekaan multirepresentasi. Dapat disimpulkan bahwa, penerapan pembelajaran konseptual interaktif dengan pendekatan multirepresentasi dapat meningkatkan level pemahaman konsep pada materi usaha dan energi.
Rancang Bangun Alat Pembuat Lapisan Tipis Metode Dip Coating Berbasis Arduino Uno
Authors: Mukhsinin Ahmad , Nehru Nehru , Afrianto M Ficky
Published: July 2022

Telah dilakukan penelitian rancang bangun alat pembuat lapisan tipis metode dip coating. Tujuannya adalah merancang dan membuat alat dip coating, mengetahui fungsi waktu pencelupan, mengetahui hubungan duty cycle dengan sudut dan memperoleh kecepatan sudut yang dihasilkan. Dip coating merupakan proses dimana sebuah substrat dicelupkan ke dalam larutan kemudian diangkat secara vertikal dengan kecepatan yang konstan. Alat dip coating ini digunakan untuk mengatasi beberapa faktor dalam proses pembuatan lapisan tipis seperti waktu perendaman, kecepatan penarikan dan jumlah siklus pencelupan yang dilakukan secara manual. Arduino uno akan mengontrol semua kinerja alat yang terdiri dari motor servo, push button control dan layar LCD. Pengujian alat dip coating secara pokok yaitu pengujian waktu respons alat, pengujian nilai duty cycle pada pulse width modulation (PWM) dan pengujian kecepatan sudut. Pengujian waktu respons alat dip coating didapatkan selisih waktu rata-rata 0,3 detik, waktu respons alat sangat mempengaruhi keakuratan waktu pencelupan dan waktu penarikan. Pengujian nilai duty cycle pada pulse width modulation (PWM) dilakukan dari sudut 00 sampai sudut 1800 menggunakan osiloskop dan didapatkan nilai determinasi sebesar 0,9971%. Pengujian kecepatan sudut penarikan substrat sangat mempengaruhi hasil pelapisan pada lapisan tipis, kecepatan sudut servo pada alat ini digunakan kecepatan yang smooth dengan nilai sebesar 6,25 RPM. Semakin tinggi kecepatan penarikan substrat maka lapisan tipis yang dihasilkan lebih tebal dibandingkan dengan kecepatan yang rendah, hal ini karena peningkatan kecepatan penarikan menyebabkan larutan cair merekat pada substrat yang bergerak keatas lebih cepat menguap dan kering.
Analisis Pemahaman Konsep Fisika Siswa Pada Pokok Bahasan Fluida Statis
Authors: Adisna Qowiyyun Dyaheksita Pradani Putri , Wahuni Amik , Suyudi Agus
Published: July 2022

Penelitian ini dilakukan untuk menganalisis tingkat pemahaman konsep siswa pada pokok bahasan fluida statis. Metode penelitian yang digunakan yaitu penelitian deskriptif-kuantitatif dengan menggunakan instrumen tes berbasis pilihan ganda yang berjumlah 10 butir soal kepada 52 siswa MAN Lumajang. Data kuantitatif yang diperoleh digunakan untuk mengukur tingkat pemahaman konsep siswa.  Hasil yang didapatkan dari penelitian ini menunjukkan bahwa tingkat pemahaan siswa pada pokok bahasan fluida statis masih tergolong rendah dengan nilai rerata pemahaman konsep siswa hanya sebesar 25%. Siswa belum memahami dengan benar konsep fluida statis yaitu pada konsep tekanan hidrostatis mengenai pengaruh kedalaman fluida terhadap tekanan hidrostatis, pada konsep hukum pascal yaitu mengenai tekanan pada fluida tertutup yang tak termampatkan maka akan disebarkan ke seluruh ruang dan tidak akan berkurang, serta pada prinsip Archimedes mengenai pengaruh volume fluida yang dipindahkan terhadap gaya apung.
Analisis Persepsi Peserta Didik Terhadap Lembar Kerja Peserta Didik Pembelajaran Fisika SMA Negeri 8 Palembang
Authors: Purnamasari Anggun , Karoma Karoma , Bukhori K.A. , Sairi Andi Putra
Published: July 2022

Guru sebagai fasilitator harus mampu menggunakan dan memilih bahan ajar yang baik. Salah satu bahan ajar yang digunakan dalam pembelajaran yaitu LKPD. Dalam menyusun LKPD guru harus memiliki kompetensi khusus. sehingga persepsi peserta didik akan terbentuk dalam kegiatan pembelajaran. Penelitian ini bertujuan untuk menganalisis persepsi peserta didik terhadap Lembar Kerja Peserta Didik (LKPD) pada pembelajaran Fisika kelas XI di SMA Negeri 8 Palembang. Metode yang digunakan dalam penelitian adalah metode kualitatif, dan teknik pengumpulan data menggunakan observasi, wawancara, dan dokumentasi. Partisipan dalam penelitian dipilih melalui purposive sampling yang berdasarkan kriteria interaksi tertinggi dalam pembelajaran Fisika di kelas XI MIPA 1 tahun 2019/2020 dengan jumlah 36 peserta didik. Hasil penelitian bahwa persepsi peserta didik terhadap kriteria kualitas LKPD pada pembelajaran Fisika mengenai kriteria kualitas LKPD terdapat tiga syarat yaitu syarat didaktik meliputi LKPD yang mengikuti asas belajar mengajar yang efektif  telah terlaksana dengan sangat baik yang menunjukkan persentasi sebesar 84,72%, syarat konstruksi meliputi LKPD yang mempunyai cara penulisan menurut aturan baku  telah terlaksana dengan sangat baik yang menunjukkan persentasi sebesar 86,11%, dan syarat teknis meliputi LKPD yang mempunyai penampilan menarik telah terlaksana dengan sangat baik yang menunjukkan persentasi sebesar 89,81%.
Perbandingan Penggunaan Matlab dan Python Dalam Penentuan Episenter Gempa; Studi Kasus Gempa Laut Banda 06 Mei 2020
Authors: Nurrochman Arsy , Rasimeng Syamsurijal
Published: July 2022

Laut Banda merupakan laut dengan lempeng Samudra yang termuda di planet ini. Lempeng yang berusia sekitar 5jt tahun ini menunjukkan sedikitnya 20 gempa dalam satu bulan. Jumlah ini menandakan bahwa laut banda adalah laut yang aktif dalam mengekspansi dirinya. Oleh karenanya perlu dilakukan penentuan titik sumber gempa yang dapat ditentukan dengan menggunakan promgram Matlab ataupun Phyton. Pada dasarnya untuk mendapatkan lokasi episenter gempa dapat dilakukan dengan beberapa cara, seperti metode Grid Search, Geiger, dan Random Search. Selain itu pula pemrograman komputasi dapat menggunakan beberapa applikasi, dalam hal ini kami menggunakan perbandingan antara software Matlab dan Phyton. Penentuan waktu terjadinya gempa dilakukan menggunakan Diagram Wadati yang kemudian akan dilanjutkan dengan metode 3D Grid Search yang dapat memberikan informasi mengenai titik gempa secara 3D dengan memanfaatkan nilai RMS (root mean square). Pada penelitian ini bertujuan untuk melakukan relokasi hiposenter gempabumi yang terjadi di wilayah Laut Banda pada 6 Mei 2020 dengan menggunakan metode Grid Search 3D pada kecepatan 1D. Nilai RMS yang didapat dengan menggunakan program Matlab dan Phyton pada penelitian ini berturut turut adalah 4.7695e-005 di iterasi ke-48 dan 0.1701405200291348 pada iterasi ke-12.

 

Kata Kunci: 3D Grid Search, Diagram Wadati, Laut Banda, Matlab, Phyton