bluuebunny/crossref_metadata_2025 huggingface dataset:
Large-scale structures in stratified turbulent Couette flow and optimal disturbances
Authors: Zasko Grigory V. , Glazunov Andrey V. , Mortikov Evgeny V. , Nechepurenko Yuri M.
Published: February 2020

Direct numerical simulation data of a stratified turbulent Couette flow contains two types of organized structures: rolls arising at neutral and close to neutral stratifications, and layered structures which manifest themselves as static stability increases. It is shown that both types of structures have spatial scales and forms that coincide with the scales and forms of the optimal disturbances of the simplified linear model of the Couette flow with the same Richardson numbers.
Hepatotoxicity and nephrotoxicity following long-term prenatal exposure of paracetamol in the neonatal rat: is betaine protective?
Authors: Özkoç Mete , Karimkhani Hadi , Kanbak Güngör , Burukoğlu Dönmez Dilek
Published: February 2020

Background

Paracetamol is one of the widely used antipyretic and analgesic drug around the world. Many researchers showed that paracetamol caused to hepatotoxicity or nephrotoxicity.

Objective

In the present study, we aimed to determine whether betaine has protective effects on hepatotoxicity and nephrotoxicity in neonate rats, following to long term maternal paracetamol exposure.

Materials and methods

Randomly chosen neonates, from the neonate pools, were divided into three groups; Control (n=13), APAP (n=13), and APAP+Betaine (n=13). Physiological saline, paracetamol (30 mg/kg/day), and paracetamol (30 mg/kg/day)+betaine (800 mg/kg/day) were orally administered to the relevant groups during the pregnancy period (approximately 21 day). Following to the birth, neonates were decapitated under anaesthesia and tissue samples were taken for biochemical and histological analyses.

Results

The statistical analysis showed that, malondialdehyde and nitric oxide levels increase significantly in APAP group, while paraoxonase, arylesterase activity and glutathione levels decrease. After the betaine administration, glutathione levels, paraoxonase and arylesterase activities increased while malondialdehyde and nitric oxide levels decreased in APAP+betaine group. These biochemical findings also were supported by histological results.

Conclusion

In this study, our biochemical and histological findings indicate that betaine can protect the tissue injury caused by paracetamol.
Dendroindication of ecoclimatic condition in forest remediation area within Northern Steppe of Ukraine
Authors: Gritsan Y. I. , Lovynska V. M. , Sytnyk S. A. , Hetmanchuk A. I.
Published: February 2020

We analyzed ring width, latewood width and earlywood width of Pinus sylvestris trees under normal and flood condition in Dnipropetrovsk region, within Northern Steppe of Ukraine. Precipitation from February to August seems to be the most stable climatic factor which influenced Scots pine growth rate and caused the difference between maximum and minimum ring width in normal conditions. Meteorological conditions were mainly associated with general ring values and earlywood width, and were less associated with latewood width values. Assessment of the effect of climatic signals on tree rings’ growth process in living and dead trees and in the normal and flood condition by analyses of correlation and response function was conducted. Average annual temperatures affected the tree growth negatively in normal conditions and tree increment positively in flood conditions. Annual precipitation was correlated positively with ring width, earlywood width series in normal conditions, but negatively with these series in flood conditions.
A APROPRIAÇÃO PENAL DO AUTOR NOS SÉCULOS XVI E XVII: CENSURA E PRIVILÉGIOS NA FRANÇA E NA INGLATERRA
Authors: SOUZA ALVES MARCO ANTÔNIO
Published: February 2020

The author does not appear in law, at first, as a holder of patrimonial or moral rights over his work. Before being an owner, the author appears as a threat, as a possible transgressor who must be controlled and eventually punished. This thesis is defended by Michel Foucault in a conference given in 1969, in which he explores the theme and sustains the precedence of the criminal appropriation of authors over the civil one. In this article, we seek to evaluate this brief consideration by the French philosopher through a deeper historical investigation, centered on French and English law in the 16th and 17th centuries. In this investigation, the focus will be directed to the practice of prior censorship and to the system of royal privileges. It is argued that this regulatory model, centered on repression and corporate and state control, enters into crisis in the 18th century, in the context of the emergence of disciplinary devices, when a new legal arrangement is constructed. Instead of a transgressor, the author becomes, within modern law, above all, an owner. Thus, this study concludes, in general lines, by affirming the success of Foucault's thesis.
New Solutions for Mine Transport for the Transition to In-Line Mining of Minerals
Authors: Asanov A. A. , Gumennikov E. S.
Published: February 2020

Mining transport systems largely determine effectiveness of mining enterprises. The study aim is developing new technical solutions for progressive mining transport systems based on the harmonization of technological solutions and equipment. The aim is achieved through the introduction of new mine transport designs compatible with tunneling machinery, enabling change from cyclic concept of a mining enterprise activity to in-line system concept. The option is considered on development of designs of steeply inclined and curving conveyors in transport workings, including overhead and floor pipe belt conveyors and airdraulic pipeline systems for delivering lump ore from the face to the surface in the mine. At the same time, the basis of the proposed technology and equipment is the method of contactless hard rock breaking by using hydroimpulsive facilities. The proposed solutions allow decreasing mineral mining and processing capital and operating costs.
Method for Revealing Placer Gold Source
Authors: Vladimirtseva O. V.
Published: February 2020

Material characteristics of placer gold and geological and geomorphological features of placercontaining watercourses allow revealing the type of source that formed the placer. The studied area (the middle reach of theAdychaRiver, Verkhoyansk District, Yakutia) is characterized by highly developed placer gold mineralization both in ancient terrace sediments and high-order watercourses. The significant placer gold mineralization in the high-order watercourses, at very limited number of known bedrock gold deposits suggests the presence of not yet discovered bedrock gold mineralization. Revealing the type of sources of placer gold in young high-order watercourses allows to create prognostic and prospecting models for both potential placer and primary (vein) ore occurrences. The purpose of the study is to compile a logical-information algorithm, which, based on the most significant material and geological-geomorphological factors, will enable revealing the type of placer gold source and the possibility of its location discovery and probability of gold transportation continuation from the source. The study result is presented by a program (the Python programming language) that characterizes the type of placer gold source based on gold grain rounding degree, the presence of gold intergrowths with other minerals and the presence of heavy fraction. Assessment of the possibility of placer gold source location determination is based on geological and geomorphological factors: watercourse order, the type of placer, and spatial association with terraces of ancient erosion levels. The study of well-known gold placers using the created program allowed revealing gold placers  with supposedly primary gold source and other ones with the source in the form of a natural intermediate gold concentrator. A map of exogenous gold mineralization with forecast elements was also created, presenting areas promising for revealing primary gold mineralization (areas of presence of high-order watercourses with gold mineralization source) and areas of high-order watercourses promising for discovering gold placers (identified by analogy (in geological and geomorphological position) with watercourses with the known source in the form of natural intermediate gold concentrator.
Geochemical Anomaly of Cobalt and Nickel in the Area of Chernogorsky Jewelry Scapolite Deposit, Central Pamir (Tajikistan)
Authors: Odinaev Sh. A. , Litvinenko A. K. , Vercheba A. A. , Yatimov U. A.
Published: February 2020

The Chernogorsky jewelry scapolite deposit is located in the eastern part of the Central Pamir tectonic zone (the eastern part of the Republicof Tajikistan). A geochemical anomaly of cobalt and nickel of more than 55,000 m2was identified in the territory of the deposit. Within the anomaly, the metals were detected in all minerals, 95% of which belong to non-metallic minerals: olivine, enstatite, hornblende, phlogopite, calcite, dolomite, plagioclase, scapolite, potassium feldspar, nepheline, and sodalite. The deposit ore minerals comprise ilmenite, titanite, rutile, magnetite, hematite, pentlandite, pyrrhotite, and pyrite. The cobalt content is more than 20 times higher than its crustal abundance, and that of nickel is 10 times above its crustal abundance. It is recommended that the Ministry of Geology and the Ministry of Industry of the Republicof Tajikistanconduct the prospect evaluation to assess the prognostic resource potential for these elements. This allows to consider the deposit rocks (harzburgite, amphibolite and albitite) as cobalt-nickel geochemical anomaly. This anomaly should be the subject of greenfieldexploration for the elements. The deposit monomineral category may change to complex polymineral and polymetal category. This will significantly increase its investment attractiveness and economic feasibility.
The Relationship Between Smartphone Addiction and Life Satisfaction: Faculty of Sport Sciences Students
Authors: Kula Hale , Ayhan Cihan , Soyer Fikret , Kaçay Zülbiye
Published: February 2020

The aim of this study was to investigate the relationship between smartphone addiction and life satisfaction of sport sciences faculty’ students and to determine whether these parameters differ in terms of various variables. In the study, the Smartphone Addiction Scale, which was developed by Kwon et al. (2013) and adapted to Turkish by Noyan et al. (2015) was applied to determine the level of smartphone addiction of the participants. Life Satisfaction Scale developed by Diener et al. (1985) and adapted to Turkish by Köker (1991) was used to measure the life satisfaction levels of the participants. Conventional sampling method was preferred for sample selection and face-to-face survey method was used for data collection. In the analysis of the obtained data, descriptive statistics, Independent Sample t-test, One-way ANOVA and Pearson Correlation Analysis were used. . A total of 554 volunteers participated in the study: 276 males (49,8 %) and 278 females (50,2%). According to the results of the research, smartphone addiction and life satisfaction parameters differ statistically significant according to various variables. In addition, there was a significant negative correlation between life satisfaction and smartphone addiction. As a result, it was found that life satisfaction levels increased as smartphone addiction levels of participants decreased.
Examination of Psychological Symptom Levels of Physical Education Teachers and Teachers in Different Branches
Authors: BARUT Ali İlhan , DEMIR Abdurrahman
Published: February 2020

Purpose of this research is to determine differences between teachers' branches in terms of mental health status according to whether they do regular sports or not. Research was carried out using descriptive scanning model. Research population consist of schools in Turkey affiliated to the Ministry of Education, active working teachers in 2018-2019 education term. The sample consists of teachers working in Şanlıurfa and Mersin. 461 teachers were participated in the study. Easy sampling method was preferred as sampling method. Revised Symptoms Checklist (SCL-90-R) was used to measure psychological symptoms and distress developed by Derogatis. Descriptive statistics and independent samples t test was used to analyze differences between two groups. In terms of branches of teachers, there was a significant difference in all other sub-scales and GSI except HOS sub-scale. It was found that there was a significant difference in favor of teachers doing regular sports in all sub-scales according to which teachers did regular sports regardless of their branch. There was a significant difference between some sub-scales and GSI of other teachers who participated regular sports. There was no significant difference in all sub-scales between all teachers who did regular sports. As a result, GSI score of each participant who declared that they participate in regular sports was lower than those who did not. There were no significant differences in mental health status of the teachers. The difference between individuals was found to be significant compared to whether or not to do regular sports. Sub-scales scores of teachers who participated in regular sports were found to be low.
Turkish as a Foreign Language Learners’ Language Learning Skills Related Problems
Authors: Göçen Gökçen , Okur Alpaslan
Published: February 2020

Number of studies on teaching Turkish as a foreign language (TFL) has increased along with the increasing number of foreign students in Turkey. Turkish is intended to be taught more effectively and efficiently through scientific studies and development of the materials that can be used in teaching process. The problems that are encountered in this process form a basis for scientific studies and material development. Detecting such problems enables production of researches on lessening and eliminating the problems, finding solutions, and providing recommendations. In this sense, it is important to detect the problems related to language learning skills in teaching TFL. Therefore, it is aimed to detect the problems of the TFL learners related to language learning skills in this study. For this purpose, the data were collected with a form consisting of open-ended questions and the form was filled in by B1-B2 level learners studying Turkish at Turkish Language Teaching Research and Application Center at Sakarya University. The data were analyzed through content analysis. Learners’ reading, listening, speaking, and writing skills related problems as well as the ones related to learning grammar rules and new words are presented under themes and subthemes as the results of the study.
Assessing Environmental Awareness of Students at the University of Sulaimani
Authors: Hamaamin Yaseen
Published: February 2020

Rapid population growth, inadvertent economic development and urbanization led to major threats to natural resources and climate stability of our planet. Therefore, worldwide sustainable planning and management should be phased out soon to prevent environmental collapse. Hence, pro-environmental regulations and policies are crucial. The major difficulty that faces the environmental protection process, is the lack of public participation in pro-environmental behaviour. Raising the rate of environmental awareness among individuals is the effective way for improving public participation in adopting sustainable life and environment. Environmental awareness is a criterion for a harmonious living between humans and the nature. This study investigated and surveyed the environmental consciousness among the University of Sulaimani students through a five-digit scale of a questionnaire survey. In the study, randomly mixed of positive and negative prompts were used. Results of the study showed that the rate of average environmental awareness of the students was slightly above average 2.63 on a 5 digits’ scale of evaluation. Results also showed that the university commitment to environmental education is minimal,2.32 out of 5, thus, there is a gap or deficiency of required green education in most of the university colleges curriculum. This study ended with numerous suggestions to the university decision makers towards raising student’s environmental awareness. Green education can be achieved by adding environmental courses in colleges study programs, organizing seminars, and special activities regarding environmental protection.
Inheritance of Some Growth and Yield Traits in Bread Wheat Using Line×Tester Analysis
Authors: Ali Fatih , Abdulkhaleq Dana
Published: February 2020

Seven Bread wheat genotypes (Triticum aestivum L.) were used in this investigation. Three genotypes namely (Maroof, Aras, and Hasad) were used as female parents (lines) and four genotypes namely (Alla, Tamuz-2, Adana and Sabr Beg) were used as male parents (testers).The 12 F1’s hybrids with their 7 parents were evaluated during 2018-2019 growing season. Genotypes were crossed in a line×tester matting in Completely Randomized Block Design (CRBD) with three replicates at two Locations; Kanipanka and Qlyasan, at Sulaimani city in Iraqi Kurdistan Region. The pooled analysis of variance confirmed that location had a significant effect on almost all of the studied traits, but it has no effect on grain yield plant-1. The results proved a significant difference between the studied locations in all characters except final yield. At Kanipanka location, Sabr Beg and the cross Maroof×Tamuz-2 granted the highest yield; 26.303  and 23.914 g plant-1respectively.At Qlyasan location Tamuz-2 and the cross Hasad ×Tamuz-2granted the highest yield;19.875 and 19.724 g plant-1 respectively. Tamuz-2 recorded the highest positive General Combining Ability values (2.331and 2.479) for grain yield plant-1 at Kanipanka and Qlyasan, respectively. The cross Maroof ×Tamuz-2 showed the maximum positive Specific Combining Ability effect values (3.034) for grain yield plant-1 at Kanipanka, while at Qlyasan the cross Aras×Sabr Beg record the maximum value with 1.743. Testers brought many variations in the expression of the trait grain yield plant-1 at Kanipanka and Qlyasan, respectively. At both locations, the ratio of σ2gca /σ2sca value was less than one (0.062 and 0.450) and the average degree of dominance value was more than one (4.005 and 1.490) which confirmed that non-additive gene effect was in control for the trait grain yield plant-1. The maximum desirable positive heterosis value (26.082) recorded by the crosses Maroof×Tamuz-2 at Kanipanka location, while at Qlyasan location the cross Aras×SabrBeg recorded the maximum desirable positive heterosis value (26.989) for grain yield plant-1.
Evaluation of Vitamin D status in patients with Atopic Dermatitis (Eczema) in Sulaimani Province, Kurdistan region, Iraq
Authors: Hamad Nasrin , Tofiq Diary
Published: February 2020

Skin inflammation or atopic Dermatitis (AD) is a long-lasting, inflammatory skin condition which generally develops in early life. The aetiology is a complex disorder with genetics, barrier function, immunity, and environmental factors all playing key roles in disease progression. Since vitamin D has immunomodulatory properties and immunologic systems assume a job in the pathogenesis of atopic eczema. The point of the investigation is to correspond vitamin D focuses in patients who have skin inflammation with the clinical and natural elements. Questionnaire population-based study 60 patients and 50 healthy volunteers (control) with age between 17-60 years were used in this study for about 3 months. The diagnosis has based the prevalence and morphology of hand eczema in a patient with atopic dermatitis in 2006 and the blood samples were collected from each patient before filling the questionnaire form, then the level of vitamin D (VD) was measured. The mean estimation of serum vitamin D in AD was greatly of lower than the normal value, and there was a substantial difference found in the mean estimations of vitamin D between AD patients (18.51) and the controls (23.38) with P value 0.001, there is a significant distinction between patients with mild eczema and those with severe eczema, which could lead to a significant increase in vitamin D deficiency as eczema worsens, while there was no significant association among VD subgroups with age, and gender in AD patients. The results from this study indicated that VD is the main factor in the development of AD and its supplementation may help ameliorate medical signs of the disease.
Effect of Different Disinfecting Solutions on some Properties of Maxillofacial Elastomers Over Time
Authors: Al-Jumaili Qaiss , Salim Salim
Published: February 2020

Objective: The use of disinfectant solutions for a long time can cause distortion in the maxillofacial prosthesis. The purpose of this study is to check the efficiency of three disinfectant solutions on bacteria and Candida and to evaluate the changes in the color and the hardness of the silicon with the increasing of the time of disinfection.          

Methods: Twenty-eight samples of maxillo-facial silicon with dimensions of 4cm*1cm*3mm for each sample were used and divided into four groups. Group I: Normal saline 0.9 %, Group II: Sodium hypochlorite 3%, Group III: Thymol 2%, and Group IV: Neutral soap. The samples contaminated with isolated Staphylococcus epidermidis bacteria and Candida Albicans; each group immersed for 10 minutes and then 30 hours in testing solutions evaluating the growth of colonies. Hardness test was done for all testing groups by the use of Shore-A hardness tester after 30 hours of immersion for each group. Color stability was also done by the use of a digital Spectrophotometer for the same samples after the same period of immersion.

Results: Sodium hypochlorite and thymol solutions showed a highly significant difference on bacterial and Candida growth in both time intervals with no effect on hardness and color, Neutral soap showed a poor disinfection effect on microorganisms with a low significant change in the hardness and no effect on color stability.

Conclusions: Sodium hypochlorite 3% and Thymol 2% are very effective disinfection solutions on both bacteria and candida with very little effects on the hardness and color stability
Dispersion of Zinc Oxide Nanoparticles in Maxillofacial Silicone Elastomer by Ultrasonication: A Morphological Study
Authors: Abdalqadir Mohammed , Faraj Souza , Azhdar Bruska
Published: February 2020

Objective: Aggregation and agglomeration of nanoparticles in silicone elastomer is a common problem that adversely affects the mechanical properties of the silicone because the aggregations act as a weak and stress concentrating point within the silicone elastomer matrix. The objective of this study was to evaluate the effect of sonication on the dispersion of ZnO nanoparticles in M-511 heat vulcanized maxillofacial silicone.        

Methods: Nano-ZnO was added in concentrations of 1%, 2%, 3%, and 5% by weight to Cosmesil M-511 heat vulcanized maxillofacial silicone elastomer, after sonication of ZnO nanoparticles in ethanol for 30 minutes at room temperature, and 1%, 2%, 3%, and 5% were added by weight without sonication of ZnO nanoparticles. Then field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD) tests were used to assess the efficiency of the dispersion method and to monitor the particle size of nano-ZnO.

Results: FESEM test showed a reduction in cluster size of nano-ZnO as a result of sonication. XRD and FESEM showed a homogenous dispersion of ZnO nanoparticles within the silicone matrix.

Conclusions: Based on the results of this morphological study, sonication of nano-ZnO in ethanol represented an effective and easy way to disperse nano-ZnO in a silicone elastomer matrix. This led to a superior quality nanocomposite without affecting the base material and without the need for a coupling agent or addition of any third material.
Patient Complaints and Satisfaction with Removable Partial Dentures Therapy in Sulaimani City, Iraq
Authors: Salih Hewa , Abdulazeez Jwan , Faiq Tanya , Mahmood Mohammed , Abdalrahim Rukhosh
Published: February 2020

Objective: This study examined patients' complain regarding pain, retention and stability, food accumulation, mastication, and speaking with removable acrylic partial dentures (RPDs). Furthermore, the influence of sex, age and duration of the use of current RPDs on patient satisfaction. 

Methods: The study sample included 156 RPD wearers (107 females and 49 males) aged between (27-81) years old. Sex, age, occupation, any experience with previous RPDs, and the duration of the use of current RPDs were recorded. Then, patient satisfaction with food accumulation, presence of pain, retention and stability, mastication as well as speaking with RPDs were recorded. Data were analyzed using the Spearman’s correlation, independent t-test, and Pearson correlation test.

Results: A statistically significant relation was found between overall satisfaction and age (P =0.013). However, no significant relation of sex and wearing days of RPDs with satisfaction was observed. Eating with RPDs was the most significant complaint about most of the patients, followed by food impaction under or around the prosthesis. By contrast, speaking with RPDs was the least problem for participated patients. In addition, in the present study patients were more satisfied with RPDs that were fabricated by dentists in comparison with dental technicians (p=0.001).

Conclusions: Age has a remarkable impact on patient satisfaction with RPDs. Chewing and eating recorded the highest complain. Patients were more satisfied with RPDs constructed by a dentist. A good communication between dentists and dental technicians is recommended to improve the quality of RPDs, hence raising the patient’s oral health and quality of life.
Selection of medications in comorbidity
Authors: Belialov F. I.
Published: February 2020

New classification divides medications on five classes by influence on comorbid diseases and conditions and rates drug’s effects as favourable (A), possible (B), neutral (C), undesirable (D), and unfavourable (X). Class A includes drugs used in treatment of comorbid disease, class B embraced drugs with positive influence, class C includes drugs without significant influence or contradictory influence, class D consist of drugs with possible nonsevere adverse effects, and class X includes drugs with severe adverse effects. The more universal drug classification according to influence on comorbid diseases can include and unite other classifications. Classification may help unify marks of positive and negative influences drugs on comorbidity and help practitioners in selection of effective and safe treatment.
Penerapan Teknik Memindai dalam Meningkatkan Kemampuan Membaca Kritis Siswa Sekolah Dasar Cikurubug
Authors: Karyana Cecep
Published: February 2020

Critical reading is one of four types of reading comprehension skills. Critical reading is the activity of reading silently carried out for the purpose of learning so as to gain broader insights about something that has been read. Based on observations, it shows that the critical reading ability of fifth grade students at SDN Cikurubuk is still lacking. The cause of the problem of critical reading skills class V is still lacking, Teacher has not used appropriate reading learning techniques. This study aims to describe the application of scanning techniques (scanning) on the material to find information quickly from various special texts to improve students' critical reading skills. This study uses a class action research design, which was carried out in 2 cycles. The subjects of this study were fifth grade students at SDN Cikurubuk. Data collection techniques and research instruments used were tests. The data analysis technique uses descriptive qualitative and quantitative. The results showed that the critical reading ability of students in the first cycle obtained a percentage of completeness of 55.17 %% and 89.66% in the second cycle. The obstacles that arise in the ability to read critically by applying scanning techniques can be overcome by creating a discussion group of up to 3 students and providing guidance on how to find specific information, important details and make conclusions from specific information with the right steps. So, it can be concluded by applying the scanning technique to improve the critical reading skills of fifth grade students at SDN Cikurubuk.
Ethanol Extract of Detam 1 Soybean Seed (Glycine Max L. Merr) for Chronic Kidney Disease Therapy by In Vitro Study
Authors: Prahastuti Sijani , Hidayat Meilinah , Hasiana Stella Tinia , Widowati Wahyu , Amalia Annisa , Qodariah Rismawati Laila , Rizal Rizal , Wibowo Satrio Haryo Benowo , Kusuma Hanna Sari Widya
Published: February 2020

Chronic Kidney Disease (CKD) has increased incidence and prevalence in developing nations. In this in vitro study, we evaluated the cells proliferative effects, fibronectin (FN), transforming growth factor β (TGF-β1), and Reactive oxygen species (ROS) - level inhibition potential of ethanol extract of detam 1 soybean seed (EEDS) on glucose-induced kidney mesangial cells (SV40 MES 13). The cells proliferation assay used 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)2H-tetrazolium (MTS) assay. FN and TGF-β1 level were measured using ELISA assay kit and ROS level using flow cytometry. Level of   FN, TGF-β1 and ROS, on CKD cells model (5 mM, 10 mM glucose-induced mesangial cell) treated with EEDS 6.25 µg/mL were lower significantly compared to positive control,  EEDS improve cells viability and decrease FN, TGF-β1 and ROS level in glucose-induced kidney mesangial cells as CKD cells model.
Isolation and Identification of DPPH Radical (2,2-diphenyl-1-pikrylhidrazyl) Scavenging Active Compound in Ethyl acetat fraction of Piper acre Blume
Authors: Rijai Hifdzur Rashif , Fakhrudin Nanang , Wahyuono Subagus
Published: February 2020

Piper acre Blume, known as Black Betel (local name), is a plant that is widely used by the people of East Kalimantan, especially in Samarinda, for the treatment of illness. Leaves (3-4 months old) are collected from Samarinda, extracted, fractionated, and monitored by DPPH antiradical activity. The isolation of the Piper acre Blume is performed on the active fraction, and the structure identification is based on spectroscopic data of the compound.  The leaves were dried, pulverized, and macerated with MeOH. Dried MeOH extract was obtained upon evaporation of the solvent. The extract was then fractionated by vacuum liquid chromatography (vlc), eluted gradually by solvents having different polarities (n-hexane, ethyl acetate and methanol). The fractions obtained were monitored using TLC [n-hexane: ethyl acetate (3: 1 v/v)] that was visualized by UV254 nm, UV366 nm and DPPH. The isolation was performed by preparative TLC [SiO2, n-hexane: ethyl acetate (3: 1)] on ethyl acetate fraction that showed the highest DPPH antiradical value. A single compound was obtained, and it appeared as a round spot and pure according to TLC performances at 3 different solvent systems. The isolated Piper acre Blume compound displayed the IC50 value on the anti-radical DPPH (measured at λ 520 nm) as 10.41µg/mL. The IR spectrum (KBr) showed –OH band (3450 cm-1), aliphatic bands [alkene, 3010 cm-1; alkana 2900 cm-1), an aromatic overtone bands (1900-200 cm-1) and a strong C=O band (1725 cm-1). The NMR (1H- and 13C-) (mono and 2D) indicated the present of a p-di-substituted aromatic signals (δ, 7.54 and 7.52, d, J =6 Hz, 1 H each), 2 methyl (δ, 0.96, d, J = 7.0 Hz, 6 Hs), a triplet signal (δ, 4.22 ppm). Other signals of CH- and CH2 were shown as m signals at δ, 1.64 and 1.34 ppm.  Based on those data, the compound was identified as isoamyl p-OH benzoate that is grouped as parabens used as a preservative in the pharmaceutical preparations. In conclusion, the anti-radical (DPPH) active compound present in the leaves of Piper acre Blume is identified as isoamyl p-OH benzoate, having IC50 value anti-radical DPPH 10,41µg/mL.
Experience of Foreign Higher Education Service Trade and Its Enlightenment to China
Authors: Ning Xiaohua , Ma Guotao
Published: February 2020

With China’s entry into WTO, China’s trade in higher education services has developed rapidly. In addition to the highly developed economy, the broad market prospect has attracted more and more foreign students. However, China’s current trade in higher education services is still at the initial stage of development, showing an obvious trade deficit. From the perspective of international comparison, this study combs the development process of education service trade in major developed countries, summarizes the general rules and basic modes of its development, discusses various factors that affect the competitiveness of its national education service trade, thus analyzing the development characteristics and international competitiveness of education service trade in major developed countries, and summarizing the relevant experience and enlightenment of the development of education service trade in major developed countries. On this basis, the current situation of China’s higher education service trade is comprehensively combed, the main problems existing in China’s higher education service trade are analyzed, and reasonable ways to improve the competitiveness of China’s higher education service trade are put forward from aspects of perfecting the legislative content of higher education service trade, formulating development plans and policies, and strengthening the construction of education service institutions themselves.
Hypo-q-Norms on a Cartesian Product of Algebras of Operators on Banach Spaces
Authors: Dragomir Silvestru Sever
Published: February 2020

In this paper we consider the hypo-q-operator norm and hypo-q-numerical radius on a Cartesian product of algebras of bounded linear operators on Banach spaces. A representation of these norms in terms of semi-inner products, the equivalence with the q-norms on a Cartesian product and some reverse inequalities obtained via the scalar reverses of Cauchy-Buniakowski-Schwarz inequality are also given.
Counter examples for pseudo-amenability of some semigroup algebras
Authors: Sahami Amir
Published: February 2020

In this short note, we give some counter examples which show that [11, Proposition 3.5] is not true. As a consequence, the arguments in [11, Proposition 4.10] are not valid.
TABUNGAN PERUMAHAN RAKYAT (TAPERA) DAN PENERAPANNYA DI DKI JAKARTA
Authors: Putra Henriko Ganesha , Fahmi Erwin , Taruc Kemal
Published: February 2020

Occupancy is a basic need of every human being. As mandated by the 1945 Constitution, the State guarantees the fulfillment of citizens' needs for decent and affordable dwellings in the framework of developing Indonesian people who are wholly, self-conscious, independent and productive. The Public Housing Savings (Tapera) in accordance with Law of the Republic of Indonesia number 4 of 2016, is a long-term fund storage program that is used for housing finance, especially for Low-Income Communities (MBR). BAPERTARUM-PNS is an important lesson on how the goals of the housing savings are not utilized as retirement savings by most participants. The problem with this study is whether Tapera can be a solution for MBR in reaching funding for housing or repeating the failure of the BAPERTARUM-PNS program. Data collection from the Central Government, BP Tapera, and the Provincial Government of DKI Jakarta will be analyzed in the form of modeling of potential national and regional participation in and utilization of Tapera in DKI Jakarta Province. The results of the modeling analysis indicate a gap between Tapera's policies and people's expectations of a housing finance affordability solution for the MBR. AbstrakHunian merupakan kebutuhan dasar setiap manusia. Sebagaimana amanat UUD 1945, Negara menjamin pemenuhan kebutuhan warga negara atas tempat tinggal yang layak dan terjangkau dalam rangka membangun manusia Indonesia seutuhnya, berjati diri, mandiri, dan produktif. Tabungan Perumahan Rakyat (Tapera) sesuai Undang-Undang Republik Indonesia nomor 4 tahun 2016, merupakan program penyimpanan dana jangka panjang yang dimanfaatkan untuk pembiayaan perumahan, terutama bagi Masyarakat Berpenghasilan Rendah (MBR). BAPERTARUM-PNS menjadi pelajaran penting bagaimana ketidakberhasilan tujuan dari tabungan perumahan yang dimanfaatkan sebagai tabungan pensiun oleh sebagian besar peserta. Permasalahan dari studi ini adalah apakah Tapera dapat menjadi solusi bagi MBR dalam menjangkau pembiayaan untuk memperoleh hunian atau mengulangi ketidakberhasilan program BAPERTARUM-PNS. Pengumpulan data dari Pemerintah Pusat, BP Tapera, dan Pemerintah Provinsi DKI Jakarta akan dianalisis dalam bentuk Pemodelan potensi kepesertaan dan dana pemanfaatan Tapera secara nasional maupun regional di Provinsi DKI Jakarta. Hasil dari analisis pemodelan tersebut mengindikasikan adanya celah (gap) antara kebijakan Tapera dan harapan masyarakat akan hadirnya solusi keterjangkauan pembiayaan hunian bagi MBR.
ANALISA KAPASITAS OPTIMAL LAPANGAN PENUMPUKAN DI PANGKALAN LONTANGNGE PELABUHAN PAREPARE
Authors: Amaliah Anugrah
Published: February 2020

Abstrak

Perencanaan pelabuhan yang tidak tepat dapat mengakibatkan pelayanan pelabuhan yang kurang efisien. Optimasi digunakan untuk menemukan sebuah kondisi yang diperlukan untuk mencapai hasil terbaik dari situasi yang ada. Hal ini dicapai dengan menyeimbangkan antara biaya pelayanan yang ada dengan biaya tunggu yang diakibatkan oleh pelayanan yang ada. Biaya pelayanan tergabung dalam pengoperasian fasilitas sedang biaya tunggu menyatakan biaya menunggu bagi pelanggan. Menambah ataupun meningkatkan pelayanan berarti dapat mengurangi waktu tunggu pelanggan. Penelitian ini bertujuan untuk menganalisis kapasitas optimal Lapangan Penumpukan  Petikemas Lontangnge Pelabuhan Parepare untuk jangka pendek, jangka menengah dan jangka panjang, serta menentukan dimensi ukuran dari Lapangan Penumpukan Petikemas Lontangnge Pelabuhan Parepare. Analisa dilakukan dengan menggunakan teori antrian, dimana teori ini membantu dalam menghitung biaya-biaya akibat pelayanan yang menunggu. Perhitungan ini dilakukan dengan menganalisa data muatan bongkar-muat (B/M) petikemas dan data barang pada petikemas untuk memperoleh biaya yang ada. Selain itu, dilakukan pula perhitungan daya dukung tanah untuk menentukan tinggi tumpukan petikemas dan kapasitas lapangan. Pada hasil penelitian ini, diperoleh untuk Jangka Pendek biaya optimum untuk Lapangan Penumpukan  Petikemas Lontangnge Pelabuhan Parepare adalah Rp. 27,479,774,886.03 dengan luas dimensi lapangan adalah 4700 m2. Sedangkan untuk Jangka Menengah dan Jangka Panjang adalah Rp. 36,690,983,344.01 dengan luas dimensi lapangan adalah 25000 m2.

 Kata Kunci: Optimasi, Kapasitas Lapangan, Muatan B/M.

 

Abstract

Improper port planning results in less efficient port services. Optimization is used to find the one condition to find the best outcome of the situation. This is achieved by balancing the cost of existing services with the waiting costs caused by existing services. Service charges are incorporated in the operation of the facility while the waiting costs state the waiting costs for customers. Adding or improving services means reducing customer waiting times. The aim of this research is to analyze the optimal capacity of Lontangnge Container Yard Port of Parepare, medium and long term, and to determine the dimension of container yard’s size. The analysis is done by using queuing theory, where the costs of waiting service can be calculated. This calculation is done by analyzing data of loading-discharging payload and goods data on container to obtain cost. In addition, the calculation of soil bearing capacity is also determined the height of container pile and Container Yard (CY) capacity. In the results of this study, obtained for the short-term optimum cost for the Lontangnge Parcel Container Parepare Field is Rp. 27,479,774,886.03 with the width of field dimension is 4700 m2. While for the Medium Term and Long Term is Rp. 36,690,983,344,01 with the field dimension is 25000 m2.

 Keywords : Optimation, CY Capacity, Loading-Discharging Goods.
Sistem Pengendali Pengisian Baterai pada Pembangkit Listrik Tenaga Surya
Authors: Ainuddin Asma , Manjang Salama , Samman Faizal Arya
Published: February 2020

Kerusakan baterai merupakan permasalahan yang sering terjadi pada Pembangkit Listrik Tenaga Surya. Beberapa penyebabnya yaitu keadaan pengisian yang berlebih, tegangan terlampau rendah dan suhu baterai yang terlalu panas. Pemanfaatan sistem kendali pengisian baterai merupakan solusi terbaik. Selain berfungsi untuk mempertahankan tegangan luaran panel surya pada level tegangan baterai, sistem ini juga mengendalikan waktu pengisian. Pada paper ini, sistem pengisian baterai dibangun dari rangkaian DC ke DC konverter menggunakan charge pump, rangkaian kendali menggunakan Arduino Mega, dan rangkaian pengisian baterai. Tahap perancangan terdiri dari simulasi, pembuatan perangkat keras, dan perangkat lunak. Simulasi karakteristik charge pump menggunakan PSpice dengan konﬁgurasi dioda dan Mosfet sebagai komponen pensaklaran. Karakteristik yang didapatkan berupa penguatan tegangan maksimum sebesar 2.44×,  rekuensi kerja 10 kHz hingga 250 kHz, dan nilai tahanan beban antara 1 Ohm hingga 5 kOhm. Berdasarkan hasil tersebut diketahui pula bahwa penggunaan dioda lebih baik dibanding penggunaan Mosfet, oleh karena itu perangkat keras charge pump dirancang dengan menggunakan dioda. Pengetesan rangkaian dilakukan dengan menghubungkan panel surya ke masukan sistem kendali, hasil akhir menunjukkan sistem kendali pengisian baterai mampu mempertahankan kondisi tegangan pada level baterai yaitu sebesar 12 V walaupun tegangan panel surya bervariasi pada nilai 6 V hingga 10 V.
Simulasi Under-Voltage Load Shedding dengan Masuknya Integrasi Pembangkit Listrik Tenaga Angin
Authors: Alfira WS Wisna Saputri , Nappu Muhammad Bachtiar , Arief Ardiaty
Published: February 2020

Simulasi Under Voltage Load Shedding (UVLS) dengan mempertimbangkan integrasi pembangkit listrik tenaga bayu (PLTB). PLTB yang akan diintegrasikan ke dalam sistem interkoneksi Sulawesi Selatan milik PT. PLN (Persero) berada di daerah Sidrap sekitar 70 MW dengan menggunakan 30 turbin angin, menghasilkan 2,5 MW per turbin dan di daerah Jeneponto sekitar 62,5 MW dengan jumlah turbin angin yang sama. Kondisi angin yang berbeda dapat mempengaruhi sistem tenaga yang menyebabkan gangguan besar atau kecil, baik dalam pelepasan generator atau jalur transmisi. Berdasarkan permasalahan ini, penelitian ini bertujuan untuk melakukan simulasi pada daerah yang mengalami jatuh tegangan saat WPP berada di sistem Sulawesi Selatan. Metode sensitivitas dinamis disajikan dalam makalah ini. Dari hasil simulasi dan analisis, diperoleh lokasi load shedding di Makale, Palopo dan Latuppa dapat menstabilkan tegangan sistem namun menyebabkan area Poso berada dalam kondisi over voltage.
Hubungan Motivasi dan Penggunaan Internet dengan Tingkat Kepuasan pada Petani Perempuan
Authors: Rohtianado Yedha Ristya , Prasodjo Nuraini Wahyuning
Published: February 2020

Nowadays, the internet as an information and communication technology allows being used by all actors without exception, including those involved in agriculture. The use of the internet in the delivery of agricultural information has the opportunity to transform traditional agriculture into modern agriculture. The use of information and communication technology is very close to the identity of men. Women are often only used as objects and find various obstacles. It is suspected that there are differences among women using internet media. This research aims to analyze the relationship between characteristics and motivation with internet usage and the relation between internet usage with the level of satisfaction by women farmers. This research uses census methods to 33 women farmers KWT Puspa Sari in Kedung Badak Village. The results showed that age and income level has a significant correlation with frequency. Motivation factors have correlations with frequency and intensity. Meanwhile, the intensity has a correlation with satisfaction information.Keywords: internet, satisfaction, motivation, women farmers. ABSTRAKSaat ini internet sebagai teknologi informasi dan komunikasi yang memungkinkan untuk digunakan oleh semua pelaku tanpa terkecuali, termasuk pelaku yang menekuni bidang pertanian. Penggunaan internet dalam penyampaian informasi pertanian berpeluang untuk merubah pertanian tradisional menjadi pertanian modern. Pemanfaatan teknologi informasi dan komunikasi sangat dekat dengan identitas laki-laki. Kaum perempuan sering hanya dijadikan sebagai obyek dan menemukan berbagai kendala. Diduga terdapat perbedaan di kalangan perempuan dalam menggunakan media internet. Penelitian ini bertujuan untuk menganalisis hubungan karakteristik dan motivasi dengan penggunaan internet serta bagaimana hubungan penggunaan media internet dengan tingkat kepuasan pada petani perempuan. Penelitian ini menggunakan metode penelitian sensus kepada 33 petani perempuan anggota Kelompok Wanita Tani Puspa Sari di Kelurahan Kedung Badak. Hasil penelitian menunjukkan bahwa faktor usia dan tingkat penghasilan memiliki hubungan yang signifikan dengan frekuensi. Faktor motivasi memiliki hubungan dengan frekuensi dan intensitas. Sementara itu, intensitas memiliki hubungan dengan kepuasan informasi.Kata kunci: internet, kepuasan, motivasi, petani perempuan.
Pendampingan Pembuatan Sistem Hidroponik dan Pengolahan Sampah Organik
Authors: Sulistyawati Sulistyawati , Maulana Muchsin , Tentama Fatwa , M Surahma Asti , Sukesi Tri Wahyuni
Published: February 2020

Dusun Jatikuning dan Soka merupakan suatu daerah di Ngoro-oro, Patuk, Gunungkidul. Daerah ini memiliki lahan pertanian yang luas namun mayoritas bersifat tadah hujan karena keterbatasan air. Di wilayah tersebut melimpah limbah-limbah pertanian saat musim panen seperti sekam padi. Kondisi perekonomian warga masyarakat yang di wilayah tersebut sangat tergantung pada musim panen yang tadah hujan tersebut, sehingga saat musim kemarau warga di wilayah mitra kesulitan mempertahankan stabilitas perekonomian keluarganya. Oleh sebab itu program ini bertujuan transfer teknologi hidroponik dan pengolahan sampah organik dengan tujuan untuk mendukung perekonomian keluarga.Metode yang digunakan dalam program ini adalah pendampingan masyarakat melalui penyuluhan dan pelatihan dalam pemanfaatan hidroponik dan pengelolaan sampah organikmelalui: sosialisasi program, penyuluhan dan praktek pembuatan media tanam hidroponik, penyuluhan dan praktek pembuatan pupuk organic,  penyuluhan pembuatan briket bioarang dan monitoring dan evaluasi. Luaran dari program ini adalah:peningkatan pengetahuan dan, peningkatan ketrampilan mitra dalam pembuatan media tanam hidroponik dan pengolahan sampah organic melalui pemberdayaan masyarakat.
Pelatihan Pembuatan VCO Untuk Meningkatkan Penghasilan Masyarakat
Authors: Ibrahim Putri Sapira , Azis Rosdiani , Akolo Ingka Rizkyani
Published: February 2020

Di Desa Posso belum ada pengrajin VCO,  padahal desa ini memiliki potensi kelapa yang besar. Oleh karena itu membutuhkan sosialisasi kepada masyarakat cara pengolahan kelapa menjadi VCO. Tujuan kegiatan  ini adalah untuk meningkatkan penghasilan mitra yakni masyarakat di Desa Posso, Kabupaten Gorontalo Utara, Provinsi Gorontalo. Metode yang digunakan adalah penyuluhan dan praktek mengolak  diversifikasi produk berbahan dasar kelapa. Adapun metode pembuatan VCO yang digunakan adalah dengan menggunakan enzim yang berasal dari alam yakni enzim papain yang berfungsi untuk memisahkan antara krim santan dan minyak VCO yang dihasilkan. Hasil yang diperoleh adalah mitra mampu memproduksi VCO secara mandiri, mitra memiliki pengetahuan tentang potensi alam yang dapat dimanfaatkan untuk membuat VCO. Setelah pengabdian ini dilakukan, mitra mulai menyadari  pentingnya pengolahan hasil pertanian untuk meningkatkan pendapatan dan  memasarkan produknya di sekitaran daerah Gorontalo Utara.