bluuebunny/crossref_metadata_2025 huggingface dataset:
Which molecular properties determine the impact sensitivity of an explosive? A machine learning quantitative investigation of nitroaromatic explosives
Authors: Borges Jr Itamar , Duarte Júlio César , Dias da Rocha Romulo
Published: November 2022

We decomposed density functional theory charge densities of 53 nitroaromatic molecules into atom-centered electric multipoles using the distributed multipole analysis that provides a detailed picture of the molecular electronic structure. Three electric multipoles, ∑▒〖Q_0 (NO_2)〗 (the charge of the nitro groups), ∑▒〖Q_1 (NO_2)〗 (the total dipole, i.e., polarization, of the nitro groups), ∑▒〖Q_2 (C) 〗 (the total electron delocalization of the C ring atoms), and the number of explosophore groups (#NO_2) were selected as features for a comprehensive machine learning (ML) investigation. The target property was the impact sensitivity h_50 (cm) values quantified by drop-weight measurements. After a preliminary screening of 42 ML algorithms, four were selected based on the lowest root mean square errors: Extra Trees, Random Forests, Gradient Boosting, and AdaBoost. The predicted h_50 values of molecules having very different sensitivities for the four algorithms are in the range 19% - 28% compared to experimental data. The most important properties for predicting h_50 are the electron delocalization in the ring atoms and the polarization of the nitro groups with averaged weights of 39% and 35%, followed by the charge (16%) and number (10%) of nitro groups. A significant result is how the contribution of these properties to h_50 depends on its sensitivities: for the most sensitive explosives (h_50 up to ~ 50 cm), the four properties contribute to reducing h_50, and for intermediate ones (~ 50 cm ≲ h_50 ≲ 100 cm) #NO_2 and ∑▒〖Q_1 (NO_2)〗 contribute to increasing it and the other two properties to reducing it. For highly insensitive explosives (h_50≳ 200 cm), all four properties essentially contribute to increasing it. These results furnish a consistent molecular basis of the sensitivities of known explosives that also can be used for developing safer new ones.
The Old Quantum Theory for One-Electron Diatomic Ions and Molecules
Authors: Knudson Stephen
Published: November 2022

The modern version of the Old Quantum Theory (OQT) is applied to one-electron diatomic systems in the clamped nucleus approximation. The first part reviews the theory, whose key feature is that only those trajectories whose classical action integrals are integer or half-integer multiples of Planck’s constant are allowed. The OQT is not correct, notoriously so in the case of the ground state of H+2 . Nonetheless, elements of the underlying classical structure have effects on quantum results, an understanding of which may aid in the interpretation of wave functions and energies. In particular, the classical separatracies provide an interpretation for the failure to describe the ground state of H+2 , for kinks in the electronic energy at small internuclear separation, and for quantum critical points. The OQT generates a ground-state Born-Oppenheimer potential energy minimum for the artificial neutral one-electron molecule; for such low quantum numbers, the accuracy is not high, emphasizing the importance of quantum concepts such as superposition of states in the real world. In addition, while accuracy of the classical results does increase with quantum number (Bohr Correspondence Principle), all OQT results show some disagreement with quantum values regardless of quantum number.
Towards Frustration in Eu(II) Archimedean Tessellations
Authors: Chen Hua , Manvell Anna S. , Kubus Mariusz , Dunstan Maja A. , Lorusso Giulia , Gracia David , Jørgensen Mike S. B. , Kegnæs Søren , Wilhelm Fabrice , Rogalev Andrei , Evangelisti Marco , Pedersen Kasper S.
Published: November 2022

The solution self-assembly of trans-{EuI2} nodes and ditopic pyrazine or 4,4'-bipyridine leads to isoreticular 2D frameworks featuring the rare elongated triangular Archimedean tessellation pattern. The topology and the presence of intra-layer Eu(II)-Eu(II) antiferromagnetic interactions provide the prerequisites for geometrical spin frustration, which, due to the spin ground state degeneracy, is key for exotic magnetic phenomena such as enhanced magnetic refrigeration.
Knowledge, Practice and Attitude of Dental Students Regarding Infection Control During the COVID-19 Pandemic - A Cross Sectional Study
Authors: Firdous Mohammadi* Arshiya , Raghava Vijay , Yadalam Umesh , Bose Aditi , Pratim Roy Partha , K Nambiar Manjusha
Published: November 2022

Background and Aim The novel coronavirus disease COVID-19 is a new viral respiratory illness first identified in Wuhan province China. Dental professionals and dental students are at an increased risk as dental practice involves face-to-face communication with the patients and frequent exposure to saliva blood and other body fluids. The aim of the study was to evaluate the knowledge practice and attitude of dental students towards infection control during COVID-19 pandemic.Methodology A cross-sectional study was conducted among dental students. A total of 314 questionnaires were sent online. The questionnaire consisted of three parts - Section A Knowledge towards infection control Section B Attitude towards the infection control Section C Clinical practice. Chi square test was used to compare the distribution of responses to knowledge attitude amp clinical practice based questions.Results A total of 314 completed responses from the dental students were received. The present study results showed a knowledge score of about 95.02 attitude score of 78.06 and the clinical practice score was recorded as 94.62.Conclusion The level of awareness in undergraduate students was less when compared to postgraduate students. Further studies are required to assess the knowledge and practice of the students after holding training courses.
Managing Hypertension: An Audit of Local Practice in A Tertiary Care Hospital
Authors: Urs* Gaurav , Bag Kingshuk , L Anand
Published: November 2022

Background Hypertension is a prevalent non-communicable disease in the Indian subcontinent and its inadequate management results in increased rates of morbidity and mortality. This study aimed to identify the lack of management and assess the overall approach of the treating physicians per the American Heart Association AHA guidelines following an initial audit.Methodology A re-audit was conducted to establish if the action plan proposed in the initial audit had improved the practice.Results Of the 247 hypertensive patients 68.5 were well controlled BPlt14090. Out of the total patients 137 patients needed combined treatment either at the beginning or during the follow-up. There was an improvement noted across most parameters in the audit tool compared to the initial audit especially in the classification of hypertensive patients uarr99 device on lifestyle modifications uarr64 and follow-up with monitoring of side effects uarr48.Conclusion An improvement was noted across all parameters initially assessed in the audit. This indicates the need for checklists employed in active management. Scope for improvement was deemed necessary in differentiating secondary from primary hypertension.
THE ROLE OF SUPPORT ORGANISATIONS IN PROMOTING ORGANIC FARMING INNOVATIONS AND SUSTAINABILITY
Authors: Wiseman Ndlovu , Moebs Sabine , Mwale Marizvikuru , Zuwarimwe Jethro
Published: November 2022

Innovation is a product of collaborative effort and processes that make use of the expertise of and involves multiple stakeholders in its engineering. Most current studies focus on challenges, opportunities, and strategies for innovation. However, the role of support organisations and their specific innovative practices that foster sustainability in organic farming remain scantly researched and unknown. This study investigated innovative practices emanating from collaboration between support organisations/groups and farmers. Also, the question on how these practices influence the sustainability of organic farming was answered. A cross-sectional explorative research design was applied to collect data through semi-structured questions using interviews and focus groups in Bavaria and Baden-Wuerttemberg federal states, Germany. Innovative practices were performed at three key organisational levels namely; compliance with organic farming standards; production processes as well as marketing and consumer engagement. The findings revealed that collaborative innovative practices by support organisations/groups at the market and consumer engagement level was greater compared to other levels. The importance of innovative practices varied across the four dimensions (environmental, social, political, and economic) of organic farming sustainability. Organic farming innovations must be enhanced to improve the organic farming situation like improving area productivity, balancing for environmental friendly and safer agricultural practices as well as food security.
SOIL TEMPERATURE CONTROL FOR GROWING OF HIGH-VALUE TEMPERATE CROPS ON TROPICAL LOWLAND
Authors: Olabomi Rasaq Adekunle , Jaafar Bakar , Musa Md Nor , Sarip Shamsul
Published: November 2022

Low soil temperature (14℃–20℃) favours growing of high-value temperate crops that are known to have higher return per hectare of land than other widely cultivated crops, thereby presenting increased income to farmer. However, due to high soil cooling load, growing these crops on tropical lowland area is a challenge except through greenhouse farming or on few cool higher altitudes with resemblance of temperate climate. Greenhouse farming involves cooling the entire volume of planting zone and is energy intensive, while few cool highlands are not sufficient to achieve food security in this direction. This study aims at application of chilled water for direct cooling of soil, to create favorable soil conditions for optimal performance of planted temperate crops. However, soil cooling using vapour compression refrigeration system may not be economically viable. Solar thermal chilled water production system is presented in this study to supply the cooling. The system consists of absorption refrigeration system and dimensioned size of soil bed with chilled water pipe network. The study includes modeling of soil cooling load to determine the refrigeration power required to overcome such load. The modeled system matched well with the experiment; having standard deviation of 1.75 and percentage error of 12.24%. Parametric analysis of the soil cooling showed that temperatures of cooled soil were significantly affected by chilled water flow rates. The regression equation developed from the Analysis of Variance (ANOVA) is suitable for predicting cooled soil temperature. The cooling process is technically feasible, with potential for greenhouse gas emission reduction.
MOLECULAR CONFIRMATION OF TWO HONEYBEE SPECIES (Apis mellifera L. and A. cerana F.) IN APIARY AND THEIR FORAGING BEHAVIOR IN LITCHI ORCHARD
Authors: Rano Saifatul Hossain , Rahman Md. Mamunur , Rahman Habibur , Ghosh Totan Kumar , Hassan Jahidul
Published: November 2022

The foraging of honeybees is one of the most well-organized and admirable behaviors that exists among social insects and being greatly influenced by nectarine sources and habitat adaptability. In Bangladesh, apiculture is mostly confined to rearing of European honeybee Apis mellifera L. despite of having the native A. cerana F. due to lack of information about comparative foraging efficiency and productibility of two species in Asian cropland ecosystem. The present study aimed to molecular characterization of two honeybee species in apiary and their foraging performance on litchi orchard. The genetic identity was revealed thorough phylogenetic analysis with >90% bootstrap value using mitochondrial cytochrome oxidase sub unit- 1 (CO1) gene and nucleotide sequence data deposited to NCBI GenBank with accession number ON680900- ON680902 for A. mellifera and ON703291-ON703293 of A. cerana. Upon placing the identified bee hives in litchi orchard, the foraging efficiency were studied based on egression and ingression rate, number of bees visited flowers per minutes, and nectar and pollen collection efficiency in varied time series of the day. Principal component analysis (PCA) for measuring the contribution of different foraging parameters and the species wise PCA biplot revealed the better foraging efficiency by A. mellifera L. compared to A. cerana F. in litchi blooms. However, foraging efficiency of other nectarine sources should be analyzed for suggesting best performing bee species in apiculture.
PRE-SOWING STIMULATION OF WHEAT SEED GROWTH BY INFRARED RADIATION
Authors: Chervinsky L. , Tregub M. , Makoda S.
Published: November 2022

Wheat production is the most common edible crop in the world, accounting for one third of the world’s diet. Therefore, the main thesis of the development of modern crop production in Ukraine is to reduce costs and introduce innovative technologies for the production of quality wheat. The quality of grain and seed depends on many factors, namely: agro-climatic conditions, sowing condition of the seed material, quality characteristics of the soil, yielding properties of seeds, pre-sowing seed treatment. etc. For this purpose, the photosynthesis and intensity of photosynthesis need to be limited to the width of the leaf and the height of the leaves by a smaller cut of the stem. It is extremely important to ensure that the head and side pagons of wheat are in good condition. All parameters are often secured by the technology of grain preparation before delivery. Prior to this technology, it is possible to introduce processing of the material in the form for the development of the material. This article presents the effectiveness of the use of infrared irradiation for the pre-sowing treatment of winter wheat seeds in Sekobra Research, Germany.
COMMERCIAL AND FIELD FACTORS OF SELECTING KENAF FIBERS AS ALTERNATIVE MATERIALS IN INDUSTRIAL APPLICATIONS
Authors: Salih Rabar Fatah , Hamad Ekhlass Mamand , Ismail Tara Namiq
Published: November 2022

This work was carried out from 15 July 2021 in Grdarasha Field, College of Agricultural Engineering Sciences, Salahaddin University-Erbil. It aims to show the impact of using kenaf fibers as alternative materials in manufacturing. Global climate change and environment pollution cause to do this kind of researching. Kenaf (Hibiscus cannabinus L.) is a fast growing natural crops, belongs to the Malvaceae family. It is an industrial crop has high potential for cultivation in a tropical climate and also which resistance to various soil types and climate. Selecting the raw materials for industrial applications is more important. Actually, kenaf fibers have many advantages to use in wade range of applications, also it’s fibers not just a part of plant useful as raw material but also leaves and seeds have many other advantages and uses. The results show that there is a significant between varieties on growth and fiber yield properties. The highest plant high was of FH952 by (368.33 cm), while the best values of total fresh and dry stem yields were found of HC2 and V36, by almost (219.33 and 60.93 t/ha), respectively. Providing these results through kenaf plant could be considered as substitute materials for timber and other biocomposite manufactures, and also it causes to safe environment by absorption optimal value of carbon dioxide (CO2), then cutting of woodland trees will be decreased. Finally recommended to cultivation fiber crops (kenaf) globally to conserve environment.
Литогеохимические и палинологические показатели палеоклимата раннего плиоцена в озерных отложениях из разреза манзурского аллювия (Предбайкалье)
Authors:   Institute of the Earth's Crust SB RAS, Rasskazov S.V. ,   Irkutsk State University, Hamud A. Al ,   Irkutsk State University,   Al-Furat University, Hassan A. ,   Institute of the Earth's Crust SB RAS,   Irkutsk State University,   Al Bass University, Kulagina N.V. ,   Institute of the Earth's Crust SB RAS, Chuvashova I.S. ,   Institute of the Earth's Crust SB RAS,   Irkutsk State University, Yasnygina T.A. ,   Institute of the Earth's Crust SB RAS, Budaev R.C. ,   Geological Institute of SB RAS named after N.L. Dobretsov
Published: November 2022

The Manzurka alluvium is a polychronous complex of accumulations of sand and pebbles in the Pliocene-Early Pleistocene Proto-Manzurka paleovalley. Layers of fine-grained (aleurite and clay) material are rare in the alluvium. In the earliest (Buguldeika) alluvial horizon of the paleovalley, a 3-meter lacustrine lens of horizontally layered fine-fragmented sediments was found, in which a fairly uniform composition of spore-pollen spectra was determined and a distinct change in lithogeochemical indicators from weak weathering of material in the foot to strong – in the roof of the lens was revealed. From change in the lithogeochemical characteristics of the lacustrine sediments, an episode of early Pliocene paleoclimatic variations of cold and heat was established. It occurred on background of the conservative existence of forest vegetation of warm and humid climate.
Lithogeochemical signatures of high-sulfur therapeutic mud from Nuhu-Nur Lake (Irkutsk region): comparison with the therapeutic mud of the world
Authors:   Institute of the Earth's Crust SB RAS, Yasnygina T.A. , Rasskazov S.V. ,   Institute of the Earth's Crust SB RAS,   Irkutsk State University, Chebykin E.P. ,   Institute of the Earth's Crust SB RAS,   Limnological Institute SB RAS, Fileva T.S. ,   Institute of the Earth's Crust SB RAS, Saranina E.V. ,   Institute of the Earth's Crust SB RAS,   A.P. Vinogradov Institute of Geochemistry SB RAS, Sun Yi-min ,   Institute of Natural Resources and Ecology of Heilongjiang Academy of Sciences
Published: November 2022

IIn therapeutic mud (peloids) of Lake Nuhu Nur, major oxides, trace elements, and mineral phases are determined from sedimentary columns taken in the central and near-coastal parts of the lake. In the center of the lake, layers with high and low contents of total sulfur (Stot) and S2− alternate. Sulfur is part of sulfates: gypsum, tenardite, and hexahydrite. The distribution of S is generally correlated with Na2O, CaO, Sr, and U with a strong negative correlation with other major oxides and trace elements. In near-coastal parts of the lake, there are layers enriched and depleted with CaO, which strongly correlates with Sr. Lithogeochemical signatures of peloids show concentration of therapeutic components in the bottom sediments of the lake due to processes similar to weathering of rocks of silicic composition in arid climate. In terms of major oxides and trace elements, peloids from Lake Nuhu Nur are generally comparable to those from Wudalianchi (Northeast China), coastal regions of Brazil, as well as Georgia and Spain, but are closest to therapeutic high-sulfur sulfate mud of Kopahue in Argentina.
Field training practice in geology and physical geography in the vicinity of Munku-Sardyk (Eastern Sayan)
Authors:   Irkutsk State University, Kovalenko S.N. , Kitov A.D. ,   Institute of Geography named after V.B. Sochava SB RAS, Ivanov E.N. ,   Institute of Geography named after V.B. Sochava SB RAS
Published: November 2022

Tducational field practice is of great importance for the future geographer as: a scientist-researcher, a teacher of secondary school, a teacher of additional education (sections of tourism, mountaineering, etc.). The described territory is promising for multifaceted training of the future specialist: it includes a variety of natural zones – from nival-glacial to mountain-taiga and steppe landscapes; relatively accessible (only three hundred kilometers from the regional center with good access roads); quite well studied and described in a number of publications for more than one hundred and fifty years.
Clay minerals of peloids of the lake Sagan-Nur in the Tunka Valley as indicators of anaerobic conditions of lithogenetic processes
Authors:   Irkutsk State University, Alokla R. ,   University of Aleppo, Chebykin E.P. ,   Limnological Institute SB RAS,   Institute of the Earth's Crust SB RAS, Rasskazov S.V. ,   Irkutsk State University,   Institute of the Earth's Crust SB RAS, Yasnygina T.A. ,   Institute of the Earth's Crust SB RAS, Akulova V.V. ,   Institute of the Earth's Crust SB RAS, Chuvashova I.S. ,   Irkutsk State University,   Institute of the Earth's Crust SB RAS, Sun Yi-ming ,   Institute of Natural Resources and Ecology
Published: November 2022

The results of the study of chemical, granulometric, and mineral compositions of sapropelic bottom silts from Sagan-Nur lake are presented in four cores of the layer as thick as 45 cm that overlies sandy lacustrine deposits. The silt is used as therapeutic mud (peloids). Clay minerals in sedimentary deposits are identified using X-ray diffraction analysis and scanning electron microscopy. Finely dispersed clay minerals of peloids are considered as indicators of anaerobic conditions of lithogenetic processes in the hypergenesis zone.
Ecological problems of land use and soil pollution of natural, arable and fallow lands of the Selenga river delta
Authors:   V.B. Sochava Institute of Geography, Siberian Branch, Belozertseva I.A. , Dubrovskii N.D. ,   Irkutsk State University
Published: November 2022

In the summer of 2017–2018 we researched the landscape-geochemical and socio-geographical aspects in the delta of the Selenga river (southeast coast of Lake Baikal). The structure of land use is dominated by hayfields and pastures. The study area is important for the development of meat and dairy farming in Buryatia. The cultivated crops here are cereals, legumes, cold-resistant silage crops, potatoes and other vegetables. In the Selenga river delta various types of soils have been formed: fluvisols, folic-podburs, and gray metamorphic and folic-gray soils. The fertile soils of the high floodplain with chernozems and phaeozems are used for arable land. The agricultural land of terraces with gray and folic-gray soils is used for pasture. The soils of the low floodplain of waterlogged meadows are included in agricultural circulation. We revealed that the soils of most agricultural lands have a satisfactory agronomic quality. The upper horizons of gray soils under the forest and chernozems under the steppe have high humus concentrations in their natural state. In constantly used agricultural soils humus content is reduced. In fallow lands, its concentrations are restored. The water pH level of soils is mostly neutral. It is revealed that the soils of the Selenga delta are mainly light soils. It was revealed that gray soils after forest clearing and using them for arable land, quickly degrade and lose their fertility. Soils of the steppes show good resistance to agricultural use. Soil deposits and arable land, previously located under forest, are infertile and require introduction of nitrogen and potassium fertilizers. Soils recently introduced for agricultural use require phosphorus and potassium fertilizers. Chernozems and gray soil of natural landscapes, as well as anthrosols, previously located under steppe, are in good and satisfactory agronomic condition. Near the settlement of Kabansk we established high concentrations of some heavy metals in alluvial soils, exceeding the MPC. An increased content of oil products, phosphates, fluorides and heavy metals in the waters of the Selenga river was revealed. The coastal waters of Lake Baikal at the mouth of the Selenga river still meet sanitary and hygienic requirements. Alluvial soils of the Selenga river delta acts as a geochemical barrier to the migration of pollutants into Lake Baikal.
Religiusitas dan Psychological Well-Being selama Masa Pandemi pada Anggota Gerakan Pemuda GPIB Tamansari Salatiga
Authors: Winman Theo Desiano , Soetjiningsih Christiana Hari
Published: November 2022

The GPIB Youth Movement is a youth association at GPIB Tamansari Salatiga which usually holds worship services and joint choir exercise in churches, but these activities were delayed and had to be held online during the COVID-19 pandemic. This pandemic situation also impact on psychological well-being, especially the youth. One of the factors that influence psychological well-being is religiosity. The purpose of this study was to determine the relationship between religiosity and psychological well-being in the youth of GPIB Tamansari Salatiga during the COVID-19 pandemic. The respondents in this study were 50 youths of GPIB Tamansari. The measuring instruments in this research are Ryff's Psychological Well-Being Scale (α = 0,921) and Centrality of Religiosity Scale (α = 0,904). Correlation test results show a positive relationship between religiosity and psychological well-being in the youth of GPIB Tamansari Salatiga during the COVID-19 pandemic.

 

Gerakan Pemuda GPIB merupakan persekutuan pemuda-pemudi di GPIB khususnya Tamansari Salatiga yang biasanya mengadakan pelayanan ibadah dan latihan paduan suara bersama di gereja, namun kegiatan-kegiatan tersebut sempat terhambat dan terpaksa diadakan secara online akibat pandemic COVID-19. Situasi dimasa pandemi ini juga berdampak pada psychological well-being khususnya para pemuda. Salah satu faktor yang mempengaruhi psychological well-being adalah religiusitas. Tujuan penelitian ini untuk mengetahui hubungan religiusitas dengan psychological well-being pada pemuda GP GPIB Tamansari Salatiga selama masa pandemi COVID-19. Responden dalam penelitian ini sebanyak 50 orang pemuda GP GPIB Tamansari. Alat ukur dalam penelitian ini yaitu Ryff’s Psychological Well-Being Scale (α = 0,921) dan Centrality of Religiosity Scale (α = 0,904). Hasil uji korelasi menunjukkan adanya hubungan yang positif antara religiusitas dengan psychological well-being pada pemuda GP GPIB Tamansari Salatiga selama masa pandemi COVID-19.
Kepercayaan Diri dan Compulsive Internet Use (CIU) pada Mahasiswa Fakultas Psikologi di Masa Pandemi COVID-19
Authors: Aria Cessna , Rahayu Maria Nugraheni M.
Published: November 2022

Abstract. This study aims to find out a significant relationship between confidence and compulsive internet use in students during the COVID-19 pandemic. This research uses a quantitative approach with correlation methods. This study has a sample of 159 students studying at the Faculty of Psychology, Satya Wacana Christian University. Personal Evaluation Inventor and Indonesia Problematic Internet Use Scale are used as instruments in collecting research data. Analysis using descriptive statistics and Product Moment techniques. The research analysis results showed a significant negative relationship between the confidence variable and the CIU variable in the 2020 Class of students of the Faculty of Psychology during the COVID-19 pandemic (r=-0.300; p=0.000). This can be interpreted that the higher the confidence, the lower the compulsive internet use, and vice versa the lower the confidence, the higher the compulsive internet use are.

Keyword: self-confidence, compulsive internet use, student college, pandemic of COVID-19.

Abstrak. Penelitian ini bertujuan untuk menemukan hubungan yang signifikan antara kepercayaan diri dan penggunaan internet secara kompulsif pada mahasiswa selama pandemi COVID-19. Penelitian ini menggunakan pendekatan kuantitatif dengan metode korelasional. Penelitian ini mengambil sampel dengan metode simple random sampling sebanyak 159 mahasiswa yang berkuliah di Fakultas Psikologi Universitas Kristen Satya Wacana. Personal Evaluation Inventor dan Indonesia Problematic Internet Use Scale digunakan sebagai instrumen dalam pengumpulan data penelitian. Analisis menggunakan statistik deskriptif dan teknik Product Moment. Hasil analisis penelitian menunjukkan bahwa terdapat hubungan negatif yang signifikan antara variabel kepercayaan diri dengan variabel CIU pada mahasiswa Fakultas Psikologi angkatan 2020 pada masa pandemi COVID-19 (r=-0,300; p=0,000). Artinya bahwa semakin tinggi rasa percaya diri maka semakin rendah penggunaan internet secara kompulsif, dan sebaliknya semakin rendah kepercayaan maka semakin tinggi penggunaan internet secara kompulsif.

Kata kunci: kepercayaan diri, penggunaan internet kompulsif, mahasiswa, pandemi COVID-19.
Current trends and prospects of multiple sclerosis research in Arab countries
Authors: Taslim Najla , Aqil Mohammad , Jbeen Akira , Ahmad Shakil , Siddiqi Aysha
Published: November 2022

Background: Multiple sclerosis is a complex and intractable neurological disease associated with substantial morbidity, healthcare utilization, management cost, and loss of productivity. There has been an alarming increase in the number of multiple sclerosis cases in Arab countries in recent years, which has spurred an increase in local research. Aims: To analyse the multiple sclerosis research profile in Arab countries. Methods: A total of 781 publications focusing on multiple sclerosis research in Arab countries from 1983 to 2021 were extracted from the Web of Science database and analysed using bibliometric techniques. Results: Publication on multiple sclerosis research increased sharply in the last decade, globally and in the Arab countries. However, Arab countries have only contributed 0.8% of the overall number of publications. Keyword pattern analysis showed that magnetic resonance imaging, optical coherence tomography, expanded disability status, demyelination, and epidemiology were the major themes of multiple sclerosis research in Arab countries. Case–control, cohort, and descriptive studies were the most prevalent study designs. However, there was a notable paucity of meta-analyses, randomized controlled trials, and clinical trials. Conclusion: Arab countries can improve their regional expertise and add a wealth of knowledge to global multiple sclerosis resources by diversifying their current research initiatives, and tracking recent advances in pathogenesis, diagnosis, and management of multiple sclerosis.
Diabetic foot exercise training for diabetes mellitus patients to control blood glucose during the COVID-19 pandemic
Authors: Qona'ah Arina , Tyas Anestasia Pangestu Mei , Wahyudi Andri Setiya , Mardhika Amellia
Published: November 2022

Physical activity restriction during the pandemic increases the risk of developing diabetic foot ulcers in patients with diabetes mellitus. Community service activities in the form of diabetic foot exercise training aim to increase knowledge and blood glucose control of diabetic mellitus patients' during the pandemic. The activities were carried out in the Tlogorejo and Madulegi villages in Sukodadi Primary Health Care for 60 patients with diabetes mellitus who are members of prolanis. Community service activities include health education about diabetes and foot care, foot exercise training and physical examination, and fasting blood glucose testing. Post-test results showed that 80% of the participants had good knowledge, 15% had sufficient knowledge, and 5% lacked knowledge. Most participants could do foot exercises, and the average fasting blood glucose level of the participants after being given counseling and training was 171.60 mg/dL. Foot exercise training can increase participants' knowledge and can be used as a way to control blood glucose during the COVID-19 pandemic.
Application of 3D printer production techniques for face shield design as a method of preventing COVID-19 transmission in the community
Authors: Ramadhan Ali , Syarifuddin Gunawan , Hadi Pillar Anugrah , Pribadi Syukur , Ramadhan Syahrul
Published: November 2022

Coronavirus Disease 19 or known as COVID-19 is a virus that attacks a person's breathing. And it is believed that it spreads through human-to-human interactions through saliva splashes. Until now, there is no medicine that can cure it. So that various parties related to health are only able to apply limits related to activities and interactions between humans. Therefore, at this time to tackle it only in the form of prevention. Face shield is one form of preventing the spread of COVID-19 which can be a new reference at this time. 3D printers are known as production tools that can be used as tools that can be presented at home, because of their small size, 3D printers can also be maximized as a tool to create objects. The use of the face shield production introduction method in the form of a webinar is an option for the public to find out methods that can be carried out in productive activities to suppress the spread of COVID-19. Besides having an online system in providing knowledge to produce face shields, it directly contributes significantly to producing something during the current pandemic, especially face shields that have use values.
Health education about COVID-19 pandemic through Youtube Channel Community Pharmacy News
Authors: Hendriati Lucia , Pramesti Galuh Nawang , Andri Ida Ayu , Albrian Diga , Widodo Teguh
Published: November 2022

To meet information related to the COVID-19 pandemic, people usually search the internet, most of this is YouTube, which is the dominant source finding information. The purpose of this community service was to provide valid information in terms of pharmaceutical science, easy to understand by the public regarding the prevention and treatment of COVID-19 so that people can behave appropriately. The method was carried out by providing audiovisual information related to the COVID-19 pandemic through the “Pharmacy Community News” YouTube channel. The evaluation was measured by the number of viewers and the number of comments on the video. Educational videos made by students of the Faculty of Pharmacy UKWMS based on research journals under the guidance of lecturers. The information presented includes the themes: hand sanitizers and disinfectants; hoaxes related to COVID-19; vitamins and herbal as immunomodulators; guidelines of COVID-19 treatment and others related to COVID-19. For a year, these videos have been viewed 18,969 times and received 1490 times comments as responses from the public. Based on this data, we can conclude that health education related to COVID-19 during the pandemic through the Youtube channel can reach the wider community and can provide the valid information.
Training on making digital brochures as an online promotion strategy for MSME products
Authors: Mavilinda Hera Febria , Nofiawaty Nofiawaty , Nazaruddin Akhmad , Siregar Lina Dameria
Published: November 2022

Micro, small and medium enterprises (MSMEs) are one of the sectors that are essential pillars in the recovery of the Indonesian economy after the COVID-19 pandemic outbreak in early 2020. Through the Ministry of Cooperatives and SMEs, the Indonesian government is trying to make a transformative recovery to revive MSMEs after the pandemic by bringing MSMEs into the digital ecosystem. The first step to enter the digital ecosystem is to design an online promotion strategy. Digital brochures are a form of online promotional media that can be an alternative for MSMEs to market and sell their products in an interactive and interesting way. The purpose of community service is to support government programs in the transformative recovery of MSMEs by providing training and assistance in making digital brochures for MSMEs in Muara Penimbung Ilir Village using the Canva application. The participants consisted of 25 MSMEs. The method of implemention community service activities is carried out offline through presentation, tutorials and interactive discussions. The results showed that 95% of the participants had understood the steps in making digital brochures. In addition, they are able to make their own digital brochures using the Canva application to market their products online.
Forecasting the Effects of Failure Criteria in Assessing Ship Structural Damage Modes
Authors: Prabowo Aditya Rio , Ridwan R. , Tuswan T. , Imaduddin Fitrian
Published: November 2022

The failure to achieve satisfactory results will cause immense losses in major projects. Nevertheless, the modeling limitations and phenomenon assumptions represented by failure criteria can significantly influence the final results—e.g., the damage mode, affecting its quantification—thus representing an interesting topic for technical assessment. This work aims to forecast the effects of several failure criteria on the damage occurring due to structural loading schemes, such as compression, torsion, and tensile tests. Failure criteria are taken based on the proposal of pioneer researchers and include those of Peschmann (P), Germanischer Lloyd (GL), Liu (LIU), and Rice–Tracey and Cockroft–Latham (RTCL). A series of nonlinear finite element analyses (NLFEA) are conducted by inputting these criteria into different loading schemes. To obtain reliable validation, the proposed models are designed based on previous laboratory experiments. The numerical results of NLFEA in the forms of damage mode, i.e., tearing, plastic deformation, and torsion, are cross-checked with experimental data. The results show that numerical modeling using the LIU criterion produces slightly larger discrepancies compared with experimental data. This indication is founded on the analysis of stress–strain, load–displacement, and shear stress–strain during the tensile test, compressive load, and torsion load, respectively. According to this work, we formulate recommendations based on the forecast tendency and accuracy for each damage mode subjected to failure criteria. Therefore, future works can adopt the findings in our current work when choosing to apply specific criteria in structural modeling and load idealization. Doi: 10.28991/CEJ-2022-08-10-03 Full Text: PDF
A Triangular Shell Element Based on Higher-order Strains for the Analysis of Static and Free Vibration
Authors: Sekkour Hamida , Belounar Lamine , Belounar Abderahim , Boussem Faiçal , Fortas Lahcene
Published: November 2022

This research paper proposes a new triangular cylindrical finite element for static and free vibration analysis of cylindrical structures. The formulation of the proposed element is based on deep shell theory and uses assumed strain functions instead of displacement functions. The assumed strain functions satisfy the compatibility equations. This finite element possesses only the five necessary degrees of freedom for each of the three corner nodes. The element's displacement field, which contains higher-order terms, satisfies the requirement of rigid-body displacement. The element's performance is evaluated using various numerical static and free vibration tests for cylindrical shell problems, including an analysis of the effect of shell openings on natural frequencies. The results of the developed element are evaluated in comparison with published analytical and numerical solutions. The new cylindrical element's formulation is straightforward. Compared to the degenerate nine-node shell element and other elements, the results of the present element have shown excellent accuracy and efficiency in predicting static and free vibration of curved structures. This element only requires the use of very coarse meshes to converge. In addition, the triangular shape of this element is more advantageous than the quadrilateral shape when the geometric domain of the structure is deformed or complicated. Doi: 10.28991/CEJ-2022-08-10-06 Full Text: PDF
PHOTOEXCITATION OF NILE BLUE DYE IN AQUEOUS SOLUTION: TD-DFT STUDY
Authors: Kostjukov V. , Leontieva S. , Savchenko E. , Rybakova K. , Voronin D.
Published: November 2022

The vibronic absorption spectra of Nile blue (NB) oxazine dye in an aqueous solution using 13 hybrid functionals, the 6-31++G(d,p) basis set, and the IEFPCM solvent model were calculated. It turned out that the O3LYP functional provided the best agreement with the experiment. Various parameters of the NB cation in the ground and excited states (IR spectra, atomic charges, dipole moments, and transition moment) were obtained. Maps of the distribution of electron density and electrostatic potential have been built. The influence of four strong hydrogen bonds of the dye with water molecules on the absorption spectrum was analyzed. It has been shown that two from these bonds were strengthened upon NB excitation and two ones were weakened. It was found that explicit assignment of water molecules strongly bound to the dye leads to a redshift of the spectrum as a whole and worsened its shape.
CHANGES IN THYROID MORPHOLOGY AND FUNCTION PRODUCED BY THE SHIFT IN DEUTERIUM/PROTIUM BALANCE IN THE ORGANISM
Authors: Timokhina E. , Yaglova N , Obernikhin S. , Yaglov Valentin
Published: November 2022

The ability to reduce the isotopic composition of hydrogen in the internal environment of the body to influence the physiology of the organs of the endocrine system is a new and practically unexplored direction in science. The aim of the work was to study the morphological and functional changes in the thyroid gland of male rats after a two-week decrease in the content of deuterium in the internal environment of the body. The experiment was carried out on male Wistar rats fed deuterium-reduced water instead of drinking water for 2 weeks. The main effect exerted by water with a reduced content of deuterium on the body is a gradual decrease in the content of deuterium in liquid media and tissues due to isotope exchange reactions. Two weeks after the start of the experiment, the concentrations of thyroid hormones were determined: total and free thyroxine, total and free triiodothyronine, and thyroid-stimulating hormone. Histological and morphometric examination of thyroid preparations was carried out. Morphological and functional changes in the thyroid gland of male rats after a two-week reduction of the deuterium content in the internal environment of the body was studied. A prolonged decrease in deuterium influx led to structural changes in the thyroid gland and its secretory activity and were associated with hypothalamic-pituitary hypothyroidism due to a decrease in the synthesis of thyroid-stimulating hormone.
EFFECT OF Cr2(SO4)3 ON A STATUS OF CHLORELLA VULGARIS CULRURE CELLS UNDER THE DIFFERENT CONTENT OF NITROGEN SOURSE – KNO3 IN THE NUTRIENT MEDIUM
Authors: Ilyuchyk I , Zakharevich L. , Nikandrov V.
Published: November 2022

The Cr2(SO4)3 effect at 10–2–10–8 M concentration on the biomass yield, the concentration of intracellular protein, chlorophylls a and b, and carotenoids on the culture of Chlorella vulgaris strain C 111 IBCE C-19 was studied. In separate experiment series, the nitrogen source, KNO3 concentration was increased by 10 and 20%. Chromium (III) had an ambiguous effect on the functional and metabolic state of the chlorella culture, depending on its concentration and the nitrogen source – KNO3 concentration. In general, at 5.0 g/l KNO3 concentration, chromium sulfate in the 10–2–10–6 M concentration inhibited the algae culture development, and at the maximum concentration caused rapid death. In the initial period of cultivation, the level of chlorophylls a and b sharply increased, which, apparently, was of a compensatory-adaptive nature. From the side of biomass, the level of intracellular protein, chlorophylls, no dynamics of an oscillatory nature, inherent in the control variant of the nutrient medium, was revealed. An increase in the concentration of KNO3 to 5.5 g/l at Cr2(SO4)310–4–10–8 M concentration was not only accompanied by an increase in biomass, but also by a noticeable (17–74%) increase in the intracellular protein level, a decrease in the “tension” of the photosynthetic apparatus (judgment by the level of pigments) and restoration of the oscillatory dynamics of photosynthetic pigments. A further increase in the potassium nitrate concentration did not give a positive result and led to the aggravation of the chlorella culture functional and metabolic state.
كلمة العدد ( العربي)
Authors: ملاك سونيا
Published: November 2022

تنجز المجلة الدولية للقانون هذا العدد الجديد مؤكدةً من خلاله هويتها الدولية والمقارنة، حيث شارك فيه باحثون من مدارس قانونية مختلفة، بأبحاث تنوعت موضوعاتها؛ سواءٌ المتعلقة بالقانون الوطني، أو القانون الدولي، أو القانون المقارن. إذ ما فتئت تمثل منبرًا هامًا لجذب الأعمال البحثية ذات الجودة العالية؛ لتكون حلقة الوصل بين الباحثين وجمهور القراء في مختلف أنحاء العالم. وأبحاث هذا العدد كانت متنوعة وثرية؛ تناولت الورقة الأولى (أبوزينة) بالدراسة "إنهاء عقد العمل وانتهاؤه في قانون العمل الفلسطيني – دراسة مقارنة ". أما الورقة البحثية الثانية (المحسن والنمش) فدار موضوعها حول "تطبيق أحكام المسؤولية الإدارية بدون خطأ على قرارات الحكومة الكويتية بحظر التجول بسبب جائحة كورونا". ولقد تطرقت الورقة البحثية الثالثة (شاهين) إلى "الميول السياسية للقاضي الدستوري وأثرها في تسبيب الأحكام ". أمّا الورقة البحثية الرابعة (سلامه وحمارشة) فتعلقت بـ "المهايأة في الطبقات والشقق في التشريع الفلسطيني: تأجير الشريك المتهايئ لحصته الشائعة". في حين درست الورقة البحثية الخامسة (شندي ويحيى) "دور نظرية الغبن في حماية المتعاقد في مبادئ اليونيدروا والقانون الفلسطيني، دراسة مقارنة". أما الورقة البحثية السادسة (عبد الباقي ومريزيق) فاهتمت بـ "مفاوضة الاعتراف ما بين الواقع في الأنظمة القانونية والتطبيق في فلسطين وقطر (دراسة تحليلية مقارنة". بينما ركزت الورقة البحثية السابعة (العيفان) على "أثر الخطأ على المسؤولية الجنائية – دراسة تحليلية في النظام القانوني الأنجلوسكسوني". وسعت الورقة البحثية الثامنة (لملّا) إلى دراسة "دور حقوق الإنسان في التحكيم الاستثماري: نحو تكامل أوثق". أمّا الورقة البحثية التاسعة (الكواري) – باللغة الإنجليزية – "حقوق المرأة الإنسانية: التقاطعية واتفاقية القضاء على جميع أشكال التمييز ضد المرأة". كما يحوي العدد مراجعة (السليطي) لكتاب "صياغة الأدوات التشريعية في دولة قطر: الأصوُل وَالمبادئ والمعَايير". وتثمن هيئة التحرير جهود كافة الباحثين والمحكمين، وترجو أن تنال هذه الأبحاث استحسان جمهور القراء وطنيًا ودوليًا
المهايأة في الطبقات والشقق في التشريع الفلسطيني: تأجير الشريك المتهايئ لحصته الشائعة
Authors: سلامه محمود عبد المحسن , حمارشة فاتح
Published: November 2022

تناولت الدراسة قسمة المهايأة في الطبقات والشقق المسجلة؛ استنادًا إلى قانون تمليك الطبقات والشقق والمحلات الفلسطيني رقم 1 لسنة 1996، وتضمنتْ أنواع قسمة المهايأة ومدى انطباقها على الطبقات والشقق، بالنظر إلى طبيعتها وخصوصيتها، وبالنظر إلى التطور الحضاري، وأثره على قسمة المهايأة. كما ناقشتْ المركز القانوني للشركاء المتهايئين في الطابق، أو الشقة عند إجراء قسمة المهايأة، وكذلك دور القضاء في قسمة المهايأة من حيث مدى جواز إجرائها جبرًا، وبالنظر إلى وضع الشركاء، وغير ذلك من العوامل التي تنظر فيها المحكمة عند نظر دعوى قسمة المهايأة. واشتمل البحث على طرق ووسائل قسمة المهايأة وشروطها وأحكامها، وناقش حالة تأجير الطبقات والشقق أثناء سريان قسمة المهايأة، والآثار القانونية المترتبة على عقد الإجارة، سواء أكانت إجارة الطابق أم الشقة محل المهايأة خاضعة لأحكام قانون المالكين والمستأجرين النافذ في فلسطين (قانون حماية المستأجر)، أو خاضعة لأحكام المجلة السارية في الضفة الغربية، التي تعتبر بمثابة قانون مدني في فلسطين
مراجعة كتاب: صياغة الأدوات التشريعية في دولة قطر: الأصول والمبادئ والمعايير، تأليف: هلال بن محمد الخليفي
Authors: السليطي محمد راشد الحسن
Published: November 2022

يُعرف التشريع – عامّةً – بأنه الأداة التي تستخدمها السلطة التشريعية لتنظم الشؤون المحلية حسب احتياج الولاية القضائية. ولكن قد يتبادر إلى الأذهان ما إذا كانت صياغة الأدوات التشريعية تختلف من مكان إلى آخر أم لا. في هذا العمل الأكاديمي، يُطلعنا المؤلف هلال بن محمد الخليفي على جانب تقني مهم أثناء عملية التشريع في دولة قطر. أما عن هيكل الكتاب فهو يشبه هيكل البحث العلمي، ويتكون من 433 صفحة، تشتمل على ثمانية فصول، تبدأ بمقدمة منفصلة، يتبعها فصل تمهيدي، وسبعة فصول تشرح أبعادًا مُختلفة في صياغة الأدوات التشريعية في دولة قطر. وعلى غرار البحث العلمي، فإن هذه الفصول يتفرع منها عدد من المباحث والمطالب، وملحق في نهاية الكتابة يحتوي على قائمة بالأدوات التشريعية المنشورة في الجريدة الرسمية القطرية من عام 1962 حتى عام 2021، وقائمة بالمصادر والمراجع