bluuebunny/crossref_metadata_2025 huggingface dataset:
Shuntogram utility in predicting future shunt failures
Authors: Adamski Ariana , O’Brien Michael W. , Adamo Matthew A.
Published: July 2021

OBJECTIVE

Shunt failure remains a challenging diagnosis for neurosurgeons, particularly when patient symptoms suggest shunt malfunction but radiographic evidence is lacking. In such situations, shuntograms are sometimes employed to guide medical decision-making. In this study, the authors aimed to investigate the utility of shuntograms in aiding patient management, particularly in terms of a negative result.

METHODS

This retrospective single-institution series comprises patients who underwent a shuntogram procedure to evaluate shunt patency over a roughly 6-year period. The medical records of patients were reviewed to determine the findings of the shuntogram procedure, the type of obstruction, and whether a subsequent operation for a shunt revision took place either within 30 days or up to 1 year after the procedure. Statistical analysis was completed by calculating the sensitivity, specificity, negative predictive value (NPV), and positive predictive value (PPV) of the shuntogram as compared with the revision surgery.

RESULTS

Of the 98 patients who underwent a shuntogram, 95 patients were included in the statistical analysis. A ventriculoperitoneal shunt was assessed in 81% of patients (77/95). The PPV of the procedure was 100%. The NPV for predicting a subsequent shunt revision within 30 days was 68.3% (false-negative rate of 31.7%) or within 365 days was 61.2% (false-negative rate of 38.8%). The sensitivity and specificity of the shuntogram were 55.8% and 100% within 30 days and 51.9% and 100% within 365 days, respectively. The most common intervention at the time of surgery following a negative shuntogram was a valve replacement in 38.5% of patients (10/26).

CONCLUSIONS

With an NPV of 68.3% for predicting revision within 30 days in our series of 95 patients, shuntograms remained a useful tool in the clinical decision-making process when evaluating potential shunt failure.
Forms of a prosecutor’s participation in civil process: comparative characteristics of legislation of Republic of Kazakhstan and Ukraine
Authors: Alibekov Adil , Yunina Maryna
Published: July 2021

In the article the authors gives comparative characteristics for various forms of prosecutor’s participation in civil proceedings of the Republic of Kazakhstan and Ukraine. A conclusion became a research result that both in Kazakhstan and in Ukraine the organs of office of public prosecutor play a considerable role providing of protection of legal rights and interests of citizens and state. A representative office of interests of citizens and state a public prosecutor in a court is by the major guarantee of realization of constitutional right of defence of rights and interests of all participants of legal relationships. It is set during research, that a representative office in a court is possible the public prosecutor of interests of citizens and state in forms and on the grounds set by a legislation. The legislation of Kazakhstan allows to participate to the public prosecutor in civil procedure in next forms: realization of higher supervision after legality of judicial acts that inured; behavior is with a statement (by a lawsuit); presentation of conclusion and solicitors in relation to judicial acts, that did not inure, entering of public prosecutor into a process in quality of defendant or third person. What touches the legislation of Ukraine, then the forms of participation of public prosecutor in civil procedure are: address to the court with the point of claim; participating in consideration of businesses, realization after that it is begun both on a lawsuit a public prosecutor and after the points of claim of other persons; an appeal is in the appellate and appeal order of businesses that were considered in a trial court; idea of statement about the judicial second thought in connection with new and by exceptional circum-stances.
Administrative and legal aspects of the state policy of ensuring the national security of Ukraine in the field of health care at the present stage
Authors: Komisarov Oleksandr , Shvets Yuriy
Published: July 2021

The article considers the main administrative and legal aspects of the state policy of national security of Ukraine in the field of health care. On this theoretical basis, the current challenges of medical reform are identified and proposals are developed to find the best ways to prevent and optimize them. Under the administrative and legal support of health care, we understand a set of organizational and legal forms and mechanisms to ensure socio-economic, health, anti-epidemic measures carried out by specialized organizations, the purpose of which is to preserve, strengthen and maintain human health, provide professional, high-quality and high-tech medical care to all who need it, as well as ensuring the availability of such care. It is concluded that the state policy of national security of Ukraine in the field of health care is aimed at creating such conditions for the health care system that allow for health education, disease prevention, provide medical care to citizens, conduct scientific research in the field of health care and training of medical and pharmaceutical workers, to maintain and develop the material and technical base of the health care system. Today in Ukraine the directions of the state policy of national security of Ukraine in the field of health care are determined by the European integration directions of our state and the commitments made by Ukraine in connection with the signing in June 2014 of the Association Agreement between Ukraine, on the one hand, and The EU, the European Atomic Energy Community and their Member States, on the other hand. However, the concept of health care reform in terms of its implementation to meet the relevant obligations has significant differences with the constitutional principle of free medical care, and therefore needs further refinement and improvement. It is substantiated that the highlighted topical issues of administrative and legal provision of health care should be taken into account in the implementation of the second stage of medical reform, which started on April 1, 2020. In addition, the experience of preventing and counteracting the spread of COVID-19 coronavirus infection should be an important aspect of health care reform.
African migrants in Cabo Verde
Authors: Krivonogov Victor P.
Published: July 2021

This article outlines the results of study among main migrant groups of Cabo Verde, nationals of Africa. Ethnographic expedition for studying contemporary ethnic processes worked on the archipelago in December 2019 - January 2020. A comprehensive research method was used, along with examination of written and statistical sources. Interviews with informants and experts and mass-survey of African migrants using representative sample was carried out.It turned out that before XX century there were no African migrants on the archipelago, and up to 98-99% of the population were Cabo Verdeans(creole) - descendants of African slaves that were brought on the islands up to the middle of XIX century.
Modern migration from African countries started only in the beginning of XXI century, but migrants viewed Cabo Verde as a staging point for further resettling into Western Europe and Northern America. In 2010, total number of African settlers achieved 10 thousand people. In the mid-2010s, government passed new laws that heavily restricted migration and the stream of new people from Africa drastically declined. Now African immigrants make up less than 2% of the total population.
This study allowed to find out the age and gender composition of immigrants, language processes, degree of adaptation to local culture, social and educational level of migrants, the degree of development of integration and assimilatory processes and other questions allowing to draw conclusion about the subsequent development of immigrant groups in the country.
Environmental pollution and health risk assessment of chemical laboratories in colleges and universities
Authors: Zeng Sheng , Li Lin
Published: July 2021

BACKGROUND: University laboratory is an important place to carry out scientific research and related teaching activities, but the environmental pollution caused by waste discharge cannot be ignored. OBJECTIVE: The research aims to explore the environmental pollution caused by the waste of chemical laboratory, and the direct or indirect harm to human health. METHODS: The main pollutants discharged by the laboratories are counted through the analysis of the waste treatment status of university chemical laboratory. Then, the harm of the discharged pollutants to the environment is analyzed by experiments to find out the main pollution problem of the chemical laboratory - wastewater pollution. The groundwater pollution caused by laboratory wastewater discharge is analyzed, and the human health risk caused by it is evaluated. RESULTS: The results show that the discharge of chemical laboratory waste in colleges and universities will cause harm to human health. The results of health risk assessment show that benzene, trichloromethane, and dichloromethane are the main pollutants, and the use of chemical reagents is one of the important reasons for the surge of laboratory waste in colleges and universities; in the carcinogenesis of multi pollutants, compared with skin absorption, the risk of cancer caused by drinking water absorption was higher, and the corresponding risk value is 5.56e-07. CONCLUSIONS: The discharge of university chemical laboratory waste will cause harm to human health. This exploration provides reference for the study of environmental pollution and health risk assessment caused by waste discharge of university chemical laboratory.
Investigation of drinking water quality and population health risk assessment in a poor rural area
Authors: Zhang Lu , Li Lin
Published: July 2021

BACKGROUND: The quality and safety of drinking water directly affect the health of the local population. However, due to the limited conditions in poor rural areas, the safety of drinking water is more prominent. OBJECTIVE: It aimed to ensure the safety of drinking water quality and population health in poor rural areas. METHODS: A rural poor area was taken as an example, the drinking water plants were monitored during wet season and dry season, respectively, and the water quality indicators of rural drinking water in the city in 2019 were detected and analyzed. Finally, based on the non-carcinogenic risk and carcinogenic risk evaluation model proposed, the health risk assessment of chemical pollutants in drinking water was carried out. RESULTS: In 2019, the qualified rate of drinking water in rural areas of the city was generally low. The average annual carcinogenic risk of drinking water in poor rural areas of the city was 1.57×10–6 (a–1), and the average annual non-carcinogenic risk was 5.38×10–9 (a–1). CONCLUSION: The health risk assessment model proposed can well evaluate the health risks of drinking water. The research provides a scientific basis for the risk management of drinking water of relevant departments.
Football sports safety and the health risk assessment system
Authors: Jin Ning , Zhang Xiao , Hou Zhitao
Published: July 2021

BACKGROUND: Football has various educational functions that can strengthen the physique and cultivate students’ patriotism and collectivist spirit. However, the characteristics of antagonism and competitiveness of football make it have certain risks. OBJECTIVE: The study aims to effectively help students clarify the safety of football sports, solve the risks caused by confrontation and competition in football projects, and guide students to exercise healthily and safely. METHODS: The risks of campus football are identified, evaluated, responded to, and monitored. Specific empirical data and Pareto analysis compile the risk investigation and risk assessment table of campus football, and the prevention measures are put forward. RESULTS: The older the person is, the higher the possibility of risk occurrence is. The sports risk of boys is significantly higher than that of girls. The human factors and sports environment have the most significant impact on the health risk of football sports. Human factors mainly involve students’ lack of discipline, poor safety awareness, low professional level of teachers, and students’ lack of enthusiasm. CONCLUSION: The study requires changing the concept, improving the students’ sports risk awareness, strengthening the construction of system and policy, and changing the passive into the active. The study can provide research ideas for the safety and risk management of football sports and promote the popularity of football on the campus
МОРФОЛОГІЧНІ ОСОБЛИВОСТІ ТА АЕРОБНА ПРОДУКТИВНІСТЬ У ФУТБОЛІСТІВ З ГІПЕРМОБІЛЬНІСТЮ СУГЛОБІВ
Authors: Hlushchuk Yevhen , Nekhanevych Oleh , Khomenko Viacheslav
Published: July 2021

Інтенсифікація фізичних навантажень у сучасному футболі вимагає від спортсменів розвитку високого рівня загальної, швидкісної і спеціальної витривалості. При побудові тренувально-змагальних навантажень у футболі особливий інтерес з боку тренерів та лікарів викликають спортсмени з ознаками дисплазії сполучної тканини, одним з частих проявів якої є гіпермобільність суглобів. Системність залучення сполучної тканини у диспластичний процес при гіпермобільності суглобів може вплинути на розвиток фізичних якостей, фізичної підготовленості, рівень функціонального стану та аеробної продуктивності і може бути причиною негативного спортивного результату. Не врахування особливостей таких спортсменів може бути причиною виникнення гострого фізичного перенапруження. Метою даної роботи було встановлення морфологічних особливостей та рівня аеробної продуктивності у футболістів з ознаками гіпермобільності суглобів. Для виконання поставленої мети було проведено аналіз даних 46 футболістів високого класу збірної Азербайджану з футболу віком від 16 до 34 років. Визначення морфометричних показників проводилось  антропометрією, склад тіла оцінювався  імпедансометрією, клінічні ознаки гіпермобільності суглобів діагностувались за критеріями Р. Beighton, оцінка аеробної продуктивності проводилась прямим газоаналізом дозованого фізичного  навантаження на велоергометрі. За результатами дослідження рівня гіпермобільності суглобів було встановлено, що 56,5% футболістів мали нормальну рухливість , 30,4% – помірну та 13,0% – значну гіпермобільність. У футболістів із значною гіпермобільністю суглобів рівень аеробної продуктивності був найменшим і становив 53,3±2,5 мл/хв/кг і найбільшим (59,5±1,2 мл/хв/кг)- у групі з нормальною рухливістю суглобів . Досліджуючи динаміку величини максимального споживання кисню в групах було встановлено статистично значиме зменшення її величини зі збільшенням ступеню гіпермобільності (р<0,05). Так, у групі з нормальною рухливістю приріст VO2 max становив 5,3±0,2 мл/хв/кг, в групі з помірною гіпермобільністю – 3,7±0,2 мл/хв/кг та в групі зі значною гіпермобільністю – 1,7±0,2 мл/хв/кг. Дослідження складу тіла в групах, розподілених за рівнем гіпермобільності суглобів, встановило, що найнижчим рівень загальної води був в групі з вираженою гіпермобільністю (р<0,05). Така динаміка відбувалась за рахунок зменшення рівня зовнішньоклітинної рідини, що може свідчити про порушення процесів обміну саме у міжклітинному матриксі. Встановлено статистично значиме зменшення рівня максимального споживання кисню зі збільшенням ступеню гіпермобільності суглобів. Доведено різницю у відповіді функціональних систем організму футболістів під час тренування загальної витривалості. Встановлення зв’язків між показниками складу тіла та величиною максимального споживання кисню може бути основою для регулювання тренувально-змагальних навантажень та для спортивного відбору.
Препарати в формі пелет, систематизація інформації щодо методів виробництва, дослідження мікроструктури та властивостей пелет омепразолу
Authors: Yerkhova Anna , Katynska Maryna
Published: July 2021

У статті наведений огляд фармацевтичних препаратів у формі пелет, систематизація інформації щодо методів виробництва, дослідження мікроструктури та властивостей пелет омепразолу. Основною метою проведеного дослідження є узагальнення випадків, коли використання такої форми як пелети є найбільш обґрунтованим, провести огляд лікарських засобів в Україні, що містять пелети, порівняти пелети від українських виробників (було вирішено взяти пелети від корпорації Артеріум та Фармак) з закордонними (в якості закордонних виробників, було вирішено взяти виробників Teva та ChemoIberica),  узагальнити сучасні методи виробництва пелет, дослідити доступні пелети омепразолу від різних виробників, порівняти їх властивості та обґрунтувати метод, який був використаний у виробництві. З метою порівняння властивостей пелет від різних виробників було вирішено дослідити морфологію, щільність, діаметр, середню масу пелет омепразолу. Дослідити та порівняти стійкості кишковорозчинних пелет омепразолу різних виробників до рідкого середовища з різними показниками рН. На підставі отриманих експериментальних даних пояснити можливу причину відмінностей у властивостях досліджуваних пелет. Методика проведення включала дослідження морфології, щільності, діаметру, середньої маси. У роботі було використано мікроскопію та гравіметричний аналіз. Для дослідження стійкості кишковорозчинних пелет до рідкого середовища з різними показниками рН було використано метод, що досліджує приріст вмісту вологи (після експозиції у розчинах, що імітують можливий рівень рН шлунку людини) та втрати в масі після висушування або швидкість розпадання пелет. Об’єктом дослідження обрано пелети омепразолу від виробників корпорації Артеріум (Kиївмедпрепарат), Фармак, ChemoIberica (CI) та Teva. У статті представлено результати експерименту, який засвідчив, що всі пелети мають резервуарну систему, пелети виробників ChemoIberica, Артеріум та Teva були виготовлені методом нашарування для введення активного фармацевтичного інгредієнту, а пелети від виробника Фармак були виготовлені з використанням методу прямої пелетизації. Також при дослідженні кишковорозчинних властивостей пелет були розраховані показники по вологопоглинанню та втрати в масі після висушування. Виходячи зі складу допоміжних речовин, який представлений в інструкції до препаратів, можна припустити, що у ролі функціонального полімеру при виробництві плівкових оболонок у ChemoIberica, Teva та Фармак цим полімером виступає метакрилатний сополімер, а у виробника Артеріум гіпромелоза фталат. Обидва полімери застосовуються у пероральній лікарській формі, як матеріал для ентерального/кишковорозчинного покриття для таблеток, пелет або гранул. Результати проведеного дослідження можуть бути корисними для подальшого удосконалення формул виробництва препаратів у формі пелет.
Investigation of the second main problem of elasticity for a layer with n cylindrical inclusions
Authors: Miroshnikov Vitaly , Denisova Tetiana
Published: July 2021

When designing structures in the form of a reinforced layer, one has to deal with the situation when the reinforcement bars are located close to each other. In this case, their influence on each other increases. In order to obtain the stress-strain state in the contact zone of the layer and the inclusion, it is necessary to have a method that would allow obtaining a result with high accuracy.
In this work, an analytical-numerical approach to solving the spatial problem of the theory of elasticity for a layer with a given number of longitudinal cylindrical inclusions and displacements given at the boundaries of the layer has been proposed.
The solution of the problem has been obtained by the generalized Fourier method with respect to the system of Lame's equation in local cylindrical coordinates associated with inclusions and Cartesian coordinates associated with layer boundaries. Infinite systems of linear algebraic equations obtained by satisfying the boundary conditions and conjugation conditions of a layer with inclusions have been solved by the reduction method. As a result, displacements and stresses have been obtained at different points of the considered medium. When the order of the system of equations is 6, the accuracy of fulfilling the boundary conditions was 10-2 for values from 0 to 1.
Numerical studies of the algebraic system of equations give grounds to assert that its solution can be found with any degree of accuracy by the reduction method, which is confirmed by the high accuracy of fulfilling the boundary conditions.
In the numerical analysis, variants of the layer with 1 and 3 inclusions have been compared. The result has shown that close placement of reinforcement bars increases stresses  on the surface of these inclusions. The values of stresses on the layer contact surfaces with inclusions have also been obtained.
The proposed solution algorithm can be used in the design of structures, the computational scheme of which is the layer with longitudinal cylindrical inclusions and displacements specified at the layer boundaries.
AWAMILU AKHTHA’I AN-NUTHQI LI-THULLABIN FI TA’LIIMI AL-LUGHATI AL-ARABIYYATI BI SMA NEGERI 3 LANGSA
Authors: Hikmah Nailul , Astuti Fuji
Published: July 2021

Tulisan ini merupakan hasil penelitian tentang faktor- faktor kesalahan pelafalan Berdasarkan fakta yang terjadi di SMA Negeri 3 Langsa dalam pembelajaran bahasa arab terjadi kesalahan pelafalan oleh siswa, sehingga peneliti tertarik untuk meneliti faktor apa yang menyebabkan siswa salah dalam pelafalan. Dalam hal ini peneliti mengambil judul tentang Faktor- Faktor kesalahan pelafalan dalam belajar bahasa arab di SMA Negeri 3 Langsa.  Pertanyaan : Apa faktor-faktor kesalahan pelafalan siswa dalam pembelajaran bahasa arab di SMA Negeri 3 Langsa. Penelitian ini dilakukan pada tahun ajaran 2020/2021 untuk mengetahui faktor-faktor kesalahan pelafalan siswa pada pembelajaran bahasa arab di SMA negeri 3 Langsa.  Metode yang digunakan pada penelitian ini adalah metode deskriptif dan analisis yaitu metode yang digunakan untuk mengumpulkan berbagai data, karena peneliti ingin menjelaskan segala data yang di dapat. Dan dengan menggunakan pendekatan kualitatif. Dan instrumen penelitiannya adalah wawancara dan angket. Adapun hasil dari penelitian  Faktor - faktor kesalahan siswa dalam pelafalan adalah faktor internal dan faktor eksternal. Faktor internal adalah siswa malas dalam belajar, kurangnya pemahaman tentang maghrijul huruf, dan tidak selalu melafalkan dan mempraktekkan pelafalan bahasa arab. Faktor eksternal adalah kurangnya perhatian orang tua terhadap anak dalam belajar mengaji (membaca Al-Quran).
Development of a fast brightness testing method for mechanical pulp based on microwave oven drying
Authors: WANG XIAOHAN , SU YANQUN , LIU JINGANG , HE ZHIBIN , NI YONGHAO
Published: July 2021

Brightness is an important quality parameter for pulp products, and it is important to have reliable measurement of pulp brightness in a timely manner for process control and/or quality control purposes. In these circumstances, a quick testing method for pulp brightness is highly desirable. A rapid handsheet brightness testing method for lignin-rich mechanical pulp has been developed, which is based on the use of tap water to make handsheets and microwave ovens to rapidly dry the handsheet. Microwave oven fast drying decreased the handsheet brightness of mechanical pulp by 5–6 points due to the lignin-originated discoloration reactions. The spray of ascorbic acid and ethylenediaminetetraacetic acid (EDTA) solutions to the handsheet can effectively inhibit these lignin discoloration reactions. With 0.2% ascorbic acid and 0.2% EDTA spraying on the wet pulp handsheet, the brightness of the handsheet from a peroxide-bleached stone groundwood pulp after the microwave oven fast drying method was similar to that obtained from the same pulp but following TAPPI Standard Test Method T 272 sp-12 “Forming handsheets for reflectance testing of pulp (sheet machine procedure)”. The effect of handsheet dryness on the handsheet brightness was also studied, and the results showed that the brightness reading was almost constant in the dry-ness range of 70% to 90%. The method developed is a reliable, fast brightness testing method for lignin-rich pulp that is of practical interest in industrial operations.
Integrated study of flue gas flow and superheating process in a recovery boiler using computational fluid dynamics and 1D-process modeling
Authors: KUMAR KUNAL , MAAKALA VILJAMI , VUORINEN VILLE
Published: July 2021

Superheaters are the last heat exchangers on the steam side in recovery boilers. They are typically made of expensive materials due to the high steam temperature and risks associated with ash-induced corrosion. Therefore, detailed knowledge about the steam properties and material temperature distribution is essential for improving the energy efficiency, cost efficiency, and safety of recovery boilers. In this work, for the first time, a comprehensive one-dimensional (1D) process model (1D-PM) for a superheated steam cycle is developed and linked with a full-scale three-dimensional (3D) computational fluid dynamics (CFD) model of the superheater region flue gas flow.
The results indicate that: (1) the geometries of headers and superheater platens affect platen-wise steam mass flow rate distribution (3%–7%); and (2) the CFD solution of the 3D flue gas flow field and platen heat flux distribution coupled with the 1D-PM affect the platen-wise steam superheating temperature (45%–122%) and material temperature distribution (1%–6%). Moreover, it is also found that the commonly-used uniform heat flux distribution approach for the superheating process is not accurate, as it does not consider the effect of flue gas flow field in the superheater region. These new observations clearly demonstrate the value of the present integrated CFD/1D-PM modeling approach.
COVID-19 Australia: Epidemiology Report 45: Reporting period ending 4 July 2021
Authors:   COVID-19 National Incident Room Surveillance Team
Published: July 2021

This is the forty-fifth epidemiological report for coronavirus disease 2019 (COVID-19), reported in Australia as at 23:59 Australian Eastern Standard Time [AEST] 4 July 2021. It includes data on COVID-19 cases diagnosed in Australia.
Pengaruh Gaya Mengajar Guru Fiqih Terhadap Motivasi Belajar Siswa MTs Negeri Purwoasri Kab. Kediri
Authors: Vinallia Vinallia
Published: July 2021

Gaya guru mengajar yang jelas dan menarik sangat dibutuhkan dalam prosempembelajaran. Karenanya guru yang kompeten selalu harapkan kehadiarannya dalam sistem pendidikan, khususnya di Indonesia. Tujuan penerapan gaya mengajar salah satunya untuk memberikan pengetahuan ke anak agar ilmu yang disampaikan oleh guru mudah dipelajari dan tujuan dari inti materi dapat terlaksana, serta meningkatkan kualitas pendidikan. Sementara motivasi belajar merupakan aspek yang sangat penting yang dapat mempengaruhi perilaku belajar siswa. Rumusan masalah dalam hal ini: 1) Bagaimana gaya mengajar guru fiqih di MTsN Purwoasri? 2) Bagaimana motivasi belajar fiqih siswa kelas VII di MTsN Purwoasri? 3) Adakah pengaruh yang signifikan antara gaya mengajar guru fiqih terhadap motivasi belajar fiqih siswa kelas VII di MTsN Purwoasri? Penelitian ini bertujuan untuk mengetahui:1) gaya mengajar guru Fiqih di MTsN Purwoasri 2) Motivasi belajar fiqih siswa kelas VII di MTsN Purwoasri 3) Pengaruh gaya mengajar guru Fiqih terhadap motivasi belajar fiqih siswa kelas VII di MTsN Purwoasri. Penelitian ini menggunakan pendekatan kuantitatif dengan jenis penelitian korelasional. Populasi peneitian ini adalah siswa-siswi kelas VII MTsN Purwoasri dengan jumlah 250 siswa dan sampel 152 siswa. Tehnik pengambilan sampel menggunakan Simple Random Sampling. Pengumpulan data dilakukan melalui  angket atau kuesioner. Dan analisis datanya menggunakan regresi linear. Hasil penelitian ini adalah gaya mengajar guru Fiqih di MTsN Purwoasri dikategorikan baik, dengan nilai rata-rata sebesar 200,75; sedangkan untuk motivasi belajar siswa di MTsN Purwoasri dikategorikan cukup, dengan nilai rata-rata 142,28. Berdasarkan uji statistik dapat disimpulkan bahwa ada pengaruh antara gaya mengajar guru Fiqih terhadap motivasi belajar siswa di MTsN Purwoasri. Hasil uji F angka koefisien determinasi menunjukkan 0,277. Dengan demikian dapat ditarik kesimpulan bahwa pengaruh gaya mengajar guru Fiqih terhadap motivasi belajar siswa di MTsN Purwoasri sebesar 27,7% dan sisanya 72, 3% dipengaruhi oleh faktor-faktor yang lain.
STUDI KOMPARASI ANTARA MODEL PEMBELAJARAN DISCOVERY LEARNING DAN GROUP INVESTIGATION TERHADAP HASIL BELAJAR KIMIA SISWA
Authors: Sari Julita , Bahar Amrul , Handayani Dewi
Published: July 2021

The average students' chemical learning outcomes are still low, the low learning outcome is influenced by several factors, including students still consider that chemistry as one of the scary, difficult to understand and less interesting lessons. Therefore, the research wants to vary the learning process in the classroom by applying the learning model of Discovery Learning with Group Investigation model. This research was aimed to find out the students’ achievement differences of chemical subject by using Discovery learning and  Group Investigation model. The research is quasi experimental research. The population of this research were class X MIPA in SMAN 9 Bengkulu City, and the sample were X MIPA 2 and MIPA 3. This research using two experimental classes, that is class X MIPA 2 applying Group Investigation model and X MIPA 3 applying Discovery Learning model. Analysis of the data used is mean values, normality test, homogeneity test, and t-test. Post-test mean values for first experiment class is 78,12, but for second experiment class is 81,3. To determine whether the differences of student’s learning outcomes between both of experiment classes or not, we use t-test by using the differences between student’s pretest and posttest values, tcount > ttable (2,17 > 1,67). The result of this research showed that Ha accepted, in other words is a significant differences in learning outcomes of student’s applying Discovery Learning and Group Investigation model.
KARAKTERISASI ISOTERM ADSORPSI DARI ION LOGAM BESI (Fe) PADA TANAH DI KOTA BENGKULU
Authors: Apriyanti Hesti , Candra I Nyoman , Elvinawati Elvinawati
Published: July 2021

[CHARACTERIZATION OF THE  ADSORPTION FROM IRON METAL IONS ISOTHERM ON THE SOIL IN BENGKULU CITY] Level of micronutrient elements Fe takes part in determining the fertility rate of agricultural land. Continuous oxidation of Fe the soil will cause soil poisoning, due to the soil saturated in absorb of Fe. This research aims to determine the characteristics of the soil, adsorption and its ability in absorption isotherm on  Fe metal. Soil samples were taken from the farm in the city of Bengkulu. The characteristics of the soil tested, i.e., water content, pH, and soil type. Adsorption isotherm type is a determination as Langmuir or  Freundlich isotherm. Soil sample after it is dried and cleaned and then milled and sieved at 100 mesh sieve. Moisture content is measured by dried in an oven for 24 hours and the measurement of the difference between the initial and the final weight of the soil. Determination of soil pH is measured by the pH meter on the CaCl2, and soil type is determined by calculating the percentage of sand, silt, and clay from the soil. Maximum adsorption capacity is determined from Fe adsorption isotherm after getting the pH, the weight of adsorbent and optimum contact time. Adsorption Isotherm was determined by adsorption of aqueous Fe variation at the concentration of  2.5; 5; 10; 15; 20; and 25 ppm on optimum pH and weight, and stirred at an optimum contact time, then filtered and measured its absorbance with UV-Vis spectrophotometer. Results of research results in the form of moisture content average 23.5%, soil pH value at 5 and soil type, i.e., dusty clay with the dominant form of Isotherm adsorption is a Freundlich isotherm, and the capacity of soil in adsorbing of iron on this research obtained is amounting to 45.6.
ANALISIS KEMAMPUAN BERPIKIR KRITIS MATA PELAJARAN KIMIA PADA SISWAKELAS XI IPA SMAN 1 KEPAHIANG
Authors: Yunita Selly , Rohiat Salastri , Amir Hermansyah
Published: July 2021

[ANALYSIS OF THE CRITICAL THINKING ABILITY FROM CHEMICAL SUBJECTS IN STUDENTS OF CLASS XI IPA SMAN 1 KEPAHIANG] This research aims to know the critical thinking ability of students. Type of this research is descriptive research using quantitative methods. This research was carried out in SMA Negeri 1 Kepahiang on September 2 to 8 may in 2017. The population in this research is the entire class XI IPA are registered on the even-numbered school year 2016/2017 semester. As the samples are taken at class XI IPA 6 of 32 participants.  Data collection is done with the test in the form of reserved descriptions as much as 10 round the whole includes indicators of critical thinking from the taxonomy of Bloom that is level (C2) understand (C3), apply (C4), analyzing and evaluating (C5). Test results obtained from the analysis of results the percentage of students with the ability to answer a question of thinking very critically at 15,6%, quite critical at 53,2 %, and less critical at 31,2 %, with an average value of 61.81. From the average of the values obtained showed that students who have average value included in the category of being. Based on the analysis of the data collected can be inferred levels of critical thinking ability of the students in class XI IPA 6 SMA Negeri 1 Kepahiang at school 2016/2017 academic year can be grouped in a category group are of 53,2 %, middle , 15,6 %  at high group and 31,2 % at low groups. From the results, it can be concluded that overall students in grades at  XI IPA 6 SMA Negeri 1 Kepahiang even 2016/2017 academic year with the ability to enough think critically.
HUBUNGAN MINAT BELAJAR SISWA DENGAN PRESTASI BELAJAR SISWA PADA MATA PELAJARAN KIMIA DI SMA NEGERI 1 TEBAT KARAI DAN SMA NEGERI 1 KABUPATEN KEPAHIANG
Authors: Rozikin Slamet , Amir Hermansyah , Rohiat Salastri
Published: July 2021

[RELATIONSHIP OF STUDENTS LEARNING ACHIEVEMENTS WITH STUDENTS LEARNING INTEREST IN THE    CHEMISTRY SUBJECTS AT SMA NEGERI 1 TEBAT KARAI AND SMA NEGERI 1 KEPAHIANG] This study aims to measure the significance of relationships of interest in learning chemistry with the result of chemical learning students in class X IPA residing in SMA Negeri 1 Tebat Karai and a in SMA Negeri 1 Kepahiang at 2016/2017 academic year.. The research is the correlation research. The population in this research is the whole  class  of X IPA grade in  SMAN 1 Tebat Karai and SMAN 1 Kepahiang at 2016/2017 academic year with total population 218 students who at was a total sample of research. Data collection techniques in the study used the instruments form of the interest in learning chemistry. Data analysis tested using correlation analysis, test validity, reliability, linear regression and hypothesis testing. Based on the analysis of the data obtained to the conclusion that there was a significant positive relationship between interest in study with the results of the study chemistry well in SMA Negeri 1 Tebat Karai and SMA Negeri 1 Kepahiang, indicated from the value of F test  is greater than F table (30.225 > 3.885) with contributions amounting to 76.4%  with the most significant influence indicator is an understanding of the concept of the learning materials with the value of the average correlation of 0,377, 14. From the results of research conducted obtained the conclusion that that interest in learning affects student learning results in class X SMA Negeri 1 Tebat Karai and SMA Negeri 1 Kepahiang.
PEMANFAATAN EKSTRAK BUAH Morus alba L. (Murbei) SEBAGAI PENGAWET ALAMI IKAN Selaroides leptolepis (Selar)
Authors: Nastiti Diah Sari , Nurhamidah Nurhamidah , Chandra I Nyoman
Published: July 2021

The purpose of this study is to measure the influence of concentration and time of soaking of fruit extracts Morus alba l. (Mulberry) is effective as a preservative Selaroides leptolepis fish (Trevally). Samples taken of coral in the fruit of the Holy City of Argamakmur, North Bengkulu and trevally fish samples taken directly from the beach, the village Plow Jakat, province of Bengkulu. Fruit samples grinded using a blender and aqueous extracts are obtained through maceration method using aquades and filtered so that retrieved the mulberry and subsequent solution diluted with aquades be a concentration of 20, 40, 60 and 80% (v/v). Phytochemicals profile test to determination of secondary metabolites in extracts. The test is done through the methods of preserving this soaking on a several concentrations variation and soaking time with without soaking as control. The variation of the concentrations is done at a concentration of 10, 20, 30 and 40%, with soaking time variation 1, 2 and 3 hours. Variation of time observations were at 12, 18 and 24 hours and test the chemical content in the form of a test of water content, levels of Total Volatile Bases (TVB), and pH values. Phytochemical test results obtained the presence of saponins, alkaloids, terpenoids, phenolic and flavonoid compounds and do not contain steroids. The results showed that the extract of Mulberry fruits proved capable of lowering the pH and the levels of TVB but does not affect the water content of the fish. Soaking time variations do not affect the water content, pH and the levels of TVB. From the results obtained that the use of the mulberry fruit extract at concentrations of 30% with long submergence 1 hour most optimal for use as a preservative natural for S. leptolepis up to 18 hours at room temperature to the value pH 6.7 and TVB at 27.2 mg N%.
UJI EFEKTIFITAS ASAP CAIR CANGKANG BUAH KARET (Hevea braziliensis) SEBAGAI ANTIBAKTERI Bacillus subtilis
Authors: Sari Lia Retno , Sumpono Sumpono , Elvinawati Elvinawati
Published: July 2021

The purpose of this research was know the effectiveness quid smoke the liquid smoke of the rubber (Hevea braziliensis)  shell.The manifacture and purification of liquid smoke is carried out by 4 stages: pyrolysis, sedimentation, distillation, redestilate. The first of the research is calculating phenol levels, total acid, pH, and type weights The results showed that the feeding of rubber  (Hevea braziliensis) shell liquid Smoke proved to inhibit the growth of bacteria Bacillus subtilis where the higher the concentration of liquid smoke, the greater the resistance. The phenol levels contained in the liquid smoke of the rubber shells were obtained at 0.84% with a total acid rate of 4.725%, and a  pH at  2.548 and a density at 1.004. Antibacterial test using disc paper with see diameter clear zone. Bacterial using is pure cultur Bacillus subtiis bacteria. The concentration liquid smoke to antibacteral test is 5%, 10%, 15%, 20% and 25%. Of the five treatment obtained KHM 20% with diameter clear zone is 5,21 mm. Analysis results using One Way ANOVA obtained F hitung ? f tabel then there Significant differences Against the resulting clear zone.
SINTESIS METIL ESTER DARI LIMBAH KELAPA SAWIT DENGAN SONOCHEMISTRY DAN CRACKING MENJADI BIOFUEL DENGAN KATALIS CrMo/HZ
Authors: Dhani Jertadi Putri , Sundaryono Agus , Handayani Dewi
Published: July 2021

This study aims to calculate the percentage methyl ester converted to biofuel through catalytic cracking reaction,analyzes component and determine characteristics using catalyst CrMo/HZ. This research begins with impregnation sample preparation which includes heating oil,degumming,bleaching and determination free fatty acid (FFA). Methyl ester obtained from liquid waste conversion crude palm oil through an esterification and transesterification reaction with H2SO4 and NaOH catalyst with sonochemistry methode is a method that utilizes ultrasonic waves origanating from a device is ultrasonic cleaner for one hour at temperature 60oC. The methyl ester obtained was cracked with a CrMo/HZ catalyst which was carried out for 2 hours at temperatur 380oC. To find out the components of compounds formed in methyl ester, an analysis was performed using GCMS then characteristics of biofuel are determined from the result of catalytic cracking obtained through acid number testing,density,viscosity,pour point and fog point. The result obtained from the conversion of methyl ester to biofuel with Crmo/HZ Catalyst Is 60,17% And For Testing The Physical Characteristics Of Biofuel Namely The Acid Number 1,87 Mg KOH/G, density 0,804 g/cm3, viscosity 1,162 Cst, pour point 0oC and fog point 1,4oC. The result of cracking produce a consituent component of biofuel namely gasoline 33,67%, kerosene 16,26%, gas oil 10,24% beside that, there are still methyl ester as much as21,89%.
ANALISIS MISKONSEPSI SISWA PADA MATERI KONSEP REDOKS MENGGUNAKAN CERTAINTY OF RESPONSE INDEX (CRI) DI SMA NEGERI 9 KOTA BENGKULU
Authors: Yuniarti Endah , Bahar Amrul , Elvinawati Elvinawati
Published: July 2021

This research aimed to describe the student misconceptions and find out the cause of misconceptions on Redox Reaction lesson at the tenth grade of Senior High School 9 Bengkulu in 2018/2019 Academic Year. Research conduct on April 15th until May 24th, 2019. The design of this research is descriptive method. The samples were taken through simple random sampling technique are 67 students of tenth grade MIPA SMA N 9 Kota Bengkulu so that 30 students were sampled. Essay test by Certainty of Response Index (CRI) and interview were used as the instruments of this research. Based on the analysis of research data shows there are misconceptions students. The analysis results show that misconceptions occurred at all sub concept on redox concept so the percentage of misconceptions that occur amounted to 35,7% in the overall student. The results showed the highest percentage of misconceptions in the amount of 46% at sub concept to determine reduction oxidation based on oxidation number on molecules and ion. The lowest percentage of misconceptions in the amount of 23% at indicator to in the sub concept of understanding oxidation and reduction in a redox reaction in terms of changes in oxidation number. Based on the results of interviews, causes of student misconception are derived from internal and external factors. Internal factors are derived from students such as students' associative thinking, student apperception and wrong intuition, students' abilities are lacking, low of students' motivation and learning interests during the learning process, students' learning methods, and students' selfconfidence in CRI values and external factors such as methods learning and limited learning resources.
PERBANDINGAN HASIL BELAJAR KIMIA SISWA ANTARA MODEL PEMBELAJARAN KOOPERATIF TIPE STAD DAN CORE DI SMAN 2 KOTA BENGKULU TAHUN PELAJARAN 2018/2019
Authors: Utari Citra , Rohiat Salastri , Nurhamidah Nurhamidah
Published: July 2021

This study aims to see whether or not there are differences in student chemistry learning outcomes between classes that apply STAD and CORE type cooperative learning models to buffer solution material in class XI MIPA Bengkulu City 2 High School 2018/2019. The study was conducted in March-April 2019. This type of research is Quasi research experiments. The population of this study was students of class XI MIPA with a population of 243 students. Sampling was carried out after the homogeneity and normality test, so the class XI MIPA A and XI MIPA B was selected as the research sample with random sampling technique with a sample of 60 students. The first experimental class uses the STAD learning model and the experimental class II uses the CORE learning model. Student learning outcomes data obtained from the value of the pretest and posttest. The two treatments given can improve learning outcomes with the average value of the pretest of experimental class I and experiment II namely 27.83 and 33.83 then the average value of the posttest of experimental class I and experiment II is 80 and 80.2 which means the posttest value has reached KKM which is 75. Hypothesis testing is done using a significant level (? = 0.05), the value obtained for t count> t table is 2,286> 1,672. These results can be concluded that there are significant differences in learning outcomes between the experimental class I and experiment II on the buffer solution material
Peningkatan Hasil Belajar Siswa pada Tema 7 Perkembangan Teknologi Melalui Model Pembelajaran Problem Based Learning di Kelas III SDN Karangreja 01 Kabupaten Brebes
Authors: Astiti Jumi , Subekti Ervina Eka , Kuswandari Kuswandari
Published: July 2021

The purpose of this study was to improve student learning outcomes on theme 7 of technological development through a problem based learning model in class III SDN Karangreja 01 Brebes Regency. This research method used classroom action research which consists of three cycles. The subjects of this study were students in class III, amounting to 22 people. The data collection technique in this study was through test and non-test methods, while the data analysis technique used descriptive analysis. The results of this study indicate that the learning outcomes of students in the first cycle get an average score of 62.0, in the second cycle the average score is 67.50 and in the third cycle the average score is 82.50. So the conclusion of this study is that through the Problem Based Learning model, it can improve student learning outcomes.
Assessment of the Compliance with 0.1% Cyclosporine A in Dry-Eye Patients with Sjögren's Syndrome
Authors: Park Do Hee , Jin Hyung Nam , Yoon Hee Su , Yoon Hyeon Jeong , Yoon Kyung-Chul
Published: July 2021

Purpose: To evaluate the compliance with 0.1% cyclosporine A in dry eye patients with Sjögren's syndrome and identify factors affecting the compliance. Methods: This study included 67 dry eye patients with Sjögren's syndrome who had used 0.1% cyclosporine A for over 6 months. Clinical parameters including sex, age, the number of eye drops used, side effects, the use of steroid eye drops, and the visit interval were investigated. Additionally, the ocular surface disease index, tear break-up time (TBUT), Schirmer test score, and corneal fluorescein staining (CFS) score were assessed. Patients were classified into compliant and non-compliant groups, using a criterion of 50% compliance; relevant factors were evaluated accordingly. Results: Of the 67 patients, 36 (53.7%) were classified into the compliant group and 31 (46.3%) into the non-compliant group. Compared to the non-compliant group, the compliant group showed a longer TBUT (p = 0.03) and a lower CFS score (p = 0.04) at 6 months of follow-up. Altogether, 39 subjects (58.2%) experienced side effects, of which the most common was stinging pain (71.8%). In the multivariate analysis, severe dry-eye symptoms (p = 0.03), non-use of the steroid eye drops (p = 0.02), and longintervals between exam vitists (p = 0.02) were identified as factors reducing compliance. Conclusions: Factors related to a decrease in the compliance with 0.1% cyclosporine A in dry-eye patients with Sjögren's syndrome, included severe dry eye symptoms, long visit intervals, and non-use of steroid eye drops. Taking these factors into consideration may help increase patient compliance.