bluuebunny/crossref_metadata_2025_split huggingface dataset:
PERBAIKAN SISTEM BUDIDAYA RUMPUT LAUT DI DESA SERIWEH KABUPATEN LOMBOK TIMUR
Authors: Cokrowati Nunik , Setyowati Dewi Nur’aeni , Diniarti Nanda , Mukhlis Alis 
Published: January 2021

Budidaya rumput laut Kappaphycuz alvarezii di desa Seriwe merupakan mata pencaharian sebagian masyarakat. Sejak tahun 2016, hasil panen menurun, pertumbuhan menurun dan rumput lautemakin mengecil. Sehingga diperlukan solusi atas permasalahan tersebut. Tujuan kegiatan ini adalah untuk memperbaiki sistem budidaya rumput laut di Desa Seriweh Kecamatan Jerowaru Kabupaten Lombok Timur. Kegiatan ini dilaksanakan di Desa Seriweh Kecamatan Jerowaru Kabupaten Lombok Timur. Metode yang digunakan adalah demplot dan pendampingan secara langsung pada satu siklus budidaya rumput laut selama 45 hari. Hasil kegiatan ini meliputi beberapa tahapan yaitu tahap-1 brain storming dan berdiskusi dengan pembudidaya mengenai permasalahan budidaya rumput laut yang sedang dihadapi saat ini. Pada tahap kedua adalah tim kegiatan menyimpulkan permasalahan inti yang terkait dengan teknik budidaya rumput laut dan menyusun solusi permasalahan yang tepat berdasarkan kajian ilmiah. Tahap-3 penyampaian solusi permasalahan ke pembudidaya serta mendiskusikannya. Tahap-4 dilakukan persiapan konstruksi budidaya dan penyediaan bibit. Tahap -5 adalah demplot budidaya rumput laut hasil kultur jaringan dengan metode longline dan rakit apung. Kesimpulan kegiatan ini adalah perbaikan sistem budidaya rumput laut di seriwe telah dilakukan dengan cara menambah lokasi budidaya di perairan dusun Semirang dengan menggunakan metode longline. Perbaikan sistem budidaya juga dilakukan dengan cara menggunakan bibit rumput laut hasil kultur jaringan.
Epidemiology and outcome of acute burn patients at a new dedicated burn centre in Nepal
Authors: Sudhin Budhi Nath Adhikari , Adhikari Sanjit , Khatiwada Sushma 
Published: January 2021

Introduction: Burn injury remains one of the biggest health concerns in the developing world. It has been regarded as a formidable public health issue in terms of mortality, morbidity and permanent disability. We aim to provide an overview of the basic epidemiological characteristics of burn patients admitted at a dedicated burn center in Chitwan, Nepal.
Methods: This was a retrospective, hospital-based observational study conducted at Chitwan Medical College Teaching Hospital (CMCTH) burn ward from September 2017 to August 2019. Patients’ records from admission/discharge book, admission/discharge summaries as well as patient’s individual files were reviewed to obtain the necessary data. Demographic data, clinical characteristics, treatments and outcomes were statistically analyzed.
Results: Among the 202 patients, the number of males slightly predominated that of females with a ratio of 1.02:1. The median age was 24 years, and the median total body surface area (TBSA) burned was 15%. Children less than 10 years comprised one third of all patients while more than one fifth were elderly. The commonest etiological factor was flame burn, closely followed by scald. The mortality rate was 12.38% for the period under review. Majority of the patients spent less than 10 days on admission and around one fifth needed surgical intervention aimed at earlier coverage. Binary logistic regression analysis showed that age, Body Mass Index (BMI) and total body surface area (TBSA) burnt were the major predictors of burn mortality.
Conclusions: The outcome of burn injuries is poor. Appropriate preventive & therapeutic measures need to be taken in terms of social education & provision of quality healthcare to reduce the incidence & improve the survival outcome of burn patients which should focus on children and elderly especially during the winter season.
Contradictions in the reproduction of the resource potential of agricultural enterprises and the conditions for overcoming it
Authors: Marmul Larisa , Kucherenko Svitlana , Levaieva Liudmyla 
Published: January 2021

The subject of the research is the theoretical, methodological and practical aspects of reproduction of the resource potential of agricultural enterprises. The purpose of the work is to identify the features and contradictions and substantiate the theoretical foundations and improve practical developments for the expanded reproduction of the resource potential of agricultural enterprises and the comprehensive development of their resource provision for the future. The methodological basis of the article was both general scientific and special methods of scientific knowledge. The article used scientific research methods: abstract-logical – to assess the impact of a combination of factors on the formation of reproduction of resource potential; system-structural analysis and synthesis – to identify the composition and functional affiliation of sources of reproduction; analytical and calculation – to study trends and patterns of reproduction and use of potential; statistical and economic, graphic – to identify and display the dynamics of reproduction indicators; computational and constructive – to substantiate a balanced model of the processes of reproduction of resource potential, taking into account its dialectical contradictions. Results of work. The article reveals the features and contradictions, substantiates the theoretical foundations and improves practical developments on the expanded reproduction of the resource potential of agricultural enterprises and the comprehensive development of their resource provision for the future. The issues of the dialectics of its implementation and the improvement of the organizational and economic mechanism are considered, taking into account the identified contradictions, the processes of differentiation of the subjects of the agrarian and agro-industrial economy, the corporatization of their management, the formation of the land market, the modernization of material and technical means, the significant rates of innovation. The field of application of results. The conclusions and results obtained in the article should be used in the educational and scientific process of the economics faculties of universities, in the work of agricultural enterprises, in the activities of rural communities, district administrations of agriculture. Conclusions. A feature of the modern economic situation at enterprises of agro-industrial production to recreate their resource potential is the presence of a dialectical contradiction: the implementation of an extensive type of expanded reproduction is fundamentally unacceptable, but it is still being carried out. Therefore, resources are used irrationally, since the constant technical basis of production determines its high cost.
Activities of joint investment institutions in Ukraine
Authors: Horodnichenko Yuliia 
Published: January 2021

Subject of research is the activities of collective investment institutions. The purpose of the article is to study the essence and features of the activities of mutual investment institutions in Ukraine, highlighting the shortcomings of its activities and prospects for development. Methods used in the research process: method of system-structural analysis and synthesis, method of comparative analysis, generalization, general scientific, special methods of scientific knowledge and other research methods. Study results. The role of joint investment institutions in attracting and trading investment funds is described. Application of results. The results of the study can be used in the activities of the Ministry of Finance of Ukraine, the Verkhovna Rada of Ukraine, the National Commission on Securities and Stock Market, as well as in higher education institutions in the teaching of economic disciplines. Conclusions. To attract investors to the market of collective investment institutions, it is important to implement a wide range of measures, the main of which is public awareness of such a market and informing each member of society about the benefits of investing in this market.
Impact of decentralization on Ukraine local budgets formation
Authors: Sliusar Svitlana 
Published: January 2021

The subject of the research is an analysis of the decentralization impact on Ukraine local budgets formation. The purpose of this study is to find a solution to the problematic aspects of the formation of self-sufficient, financially wealthy communities by analyzing the impact of decentralization on the formation of local budgets and the budgets of the combined territorial communities. Method or methodology for conducting research. The study used a set of general scientific methods and techniques, namely: comparative analysis and synthesis, abstraction, the method of induction and deduction, idealization, generalization, analogy, modeling, as well as special - expert survey, grouping, forecasting. Results of work. Decentralization today is the most effective and efficient way to ensure the financial autonomy and sustainability of local authorities by transferring to them the powerful sources of budget revenues previously assigned to the central government, and expanding the financial base of administrative-territorial formations. That is, the introduction of a new model of financial support for local budgets consists in expanding the rights of local authorities, the sources of their formation, giving them full budgetary independence and creating real ground for the exercise of their powers. And in connection with the amendments to the Budget Code on the introduction of medium-term planning, the issue of reporting and evaluating the effectiveness of budget programs is relevant for financial services workers. The field of application of results: territorial communities of Ukraine. Conclusions according to the article. One of the important problems in the formation of local budgets is to ensure balanced socio-economic development of the regions and the formation of inter-budgetary relations in order to increase the level of financial self-sufficiency by strengthening budgetary decentralization. In order for the community to be able to carry out its tasks, it must have adequate financial resources to cover its own expenses. It is likely that the formation of financially self-sufficient administrative-territorial units requires changes not only in tax and budgetary legislation, but also in the territorial size of communities, districts and regions.
Artistic Occupations in the Historical Center of São Luís (Maranhão)
Authors: De Maria Belfort de Carvalho Conceição , Wallesson dos Santos Donny , José Morais Costa Maurício , Dellene Guedes Cutrim Kláutenys , Marques Bandeira Arkley , Rabelo de Jesus Vanderley 
Published: January 2021

Study about the implications of artistic occupations in the Historic Center of São Luís for the preservation and valorization of the cultural heritage in the State of Maranhão. It aims to discuss the implications of artistic occupations present in the Historic Center and how they can contribute to the revitalization, preservation, and valorization of the cultural heritage of the capital. It is an exploratory and descriptive study, which uses documentary research and bibliographic research as a reasoning mechanism. It addresses artistic occupations and cultural heritage in its theoretical-conceptual perspectives. It also discusses the implications of artistic occupations in the Historic Center of São Luís, and how they contribute to the preservation and valorization of the cultural heritage of Maranhão. It characterizes the Old Center of São Luís, the role of artistic occupations and its implications for the cultural heritage of São Luís. And it points out that artistic occupations permeate time and space, bringing resignifications and enabling the dynamic permanence of the idea that cultural heritage is not limited to ruins, inexorable monumental mansions or untouchable works and documents.
INTRAMOLECULARLY HYPERCOORDINATED ORGANOLEAD COMPOUNDS: (o-MeOC6H4-CH2)PbPh2R, R = Ph, Cl, WITH Pb–O SECONDARY BONDING
Authors: Sharma Hemant K. , Metta-Magaña Alejandro J. , Saucedo Laura I. , López-Cardoso Marcela , Pannell Keith H. 
Published: January 2021

Abstract
The tetrahedral geometry of organolead(IV) compounds can be readily transformed by using an organic ligand containing a dangling-arm oxygen functionality. The acidity of the Pb center results in so-called secondary bonding between O and Pb thereby pushing the geometry at Pb toward a trigonal bipyramidal (tbp) structure. Replacing a phenyl group by a chlorine atom dramatically enhances this phenomenon. Thus for (o-methoxybenzyl) triphenyllead (4), and (o-methoxybenzyl)diphenyllead chloride (5), the Pb–O internuclear distances are 3.362(4) and 2.845(3) Å, respectively; 83% (4) and 70% (5) of the sum of the van der Waals Pb and O radii. Within the group 14 element congeners the structural analysis of the (o-methoxybenzyl)triphenylE compounds, E = Si, Ge, Sn, and now Pb, demonstrates the relative acidities of E are Si &lt; Ge &lt; Sn &lt; Pb.
Amino acid derivatives of natural chlorins as a platform for the creation of targeted photosensitizers in oncology
Authors: Mironov A. F. , Ostroverkhov P. V. , Tikhonov S. I. , Pogorilyy V. A. , Kirin N. S. , Chudakova O. O. , Tsygankov A. A. , Grin M. A. 
Published: January 2021

Objectives. This study aims to obtain the amino acid derivatives of chlorophyll a and bacteriochlorophyll a for the targeted delivery of pigments to tumor foci. This will increase biocompatibility and, as a result, reduce toxic side effects. In addition to photodynamic efficiency, an additional cytotoxic effect is expected for the obtained conjugates of photosensitizers (PSs) with amino acids. This is owing to the participation of the latter in intracellular biochemical processes, including interaction with the components of the glutathione antioxidant system, leading to the vulnerability of tumor cells to oxidative stress.Methods. In this work, we have implemented the optimization of the structure of a highly efficient infrared PS based on O-propyloxim-N-propoxybacteriopurpurinimide (DPBP), absorbing at 800 nm and showing photodynamic efficacy for the treatment of deep-seated and pigmented tumors, by introducing L-lysine, L-arginine, methionine sulfoximine (MSO), and buthionine sulfoximine (BSO) methyl esters. The structure of the obtained compounds was proved by mass spectrometry and nuclear magnetic resonance spectroscopy, and the photoinduced cytotoxicity was studied in vitro on the HeLa cell line.Results. Conjugates of DPBP with amino acids and their derivatives, such as lysine, arginine, MSO, and BSO have been prepared. The chelating ability of DPBP conjugate with lysine was shown, and its Sn(IV) complex was obtained.Conclusions. Biological testing of DPBP with MSO and BSO showed a 5–6-fold increase in photoinduced cytotoxicity compared to the parent DPBP PS. Additionally, a high internalization of pigments by tumor cells was found, and the dark cytotoxicity (in the absence of irradiation) of DPBP-MSO and DPBP-BSO increased fourfold compared to the initial DPBP compound. This can be explained by the participation of methionine derivatives in the biochemical processes of the tumor cell.
Development of technology for producing biodegradable hybrid composites based on polyethylene, starch, and monoglycerides
Authors: Vasilyev I. Yu. , Ananyev V. V. , Kolpakova V. V. , Sardzhveladze A. S. 
Published: January 2021

Objectives. This work aimed to develop technology to produce biodegradable hybrid composite (BHC) films based on low-density polyethylene (LDPE) 115030-070 and thermoplastic starches (TPS) of various origins (corn, pea, and rice), with distilled monoglycerides as the plasticizer. The properties of the produced BHC films were studied and the optimal native starch : glycerol : monoglycerides ratio is proposed.Methods. TPS and BHC films based on this material were produced from different types of native starches in laboratory extruders (Brabender and MashPlast, Russia), and the extruded melts were subjected to ultrasonic vibrations. The structure and appearance of the BHC films were studied using scanning electron microscopy and rheology. Their biodegradability was assessed by immersing them in biocompost for three months. To evaluate the mechanical performance of the BHC films produced with and without ultrasound, the changes in tensile stress and elongation at break were determined during the biodegradation process.Results. The BHC films had a homogeneous structure, except small agglomerates (non-melted starch grains), which did not reduce their quality. The films with monoglycerides had high tensile strength, which was comparable with low-density polyethylene. After removing samples of the BHC films from the biocompost, their tensile strength decreased by 20%, which shows their biodegradability.Conclusions. The produced biodegradable composite films and the technology used to produce them will be applicable for the packaging industry to reduce environmental impact.
Change of electrical characteristics of rubber in the process of “swelling–deswelling”
Authors: Kovaleva L. A. , Ovsyannikov N. Ya. , Zuev A. A. 
Published: January 2021

Objectives. The main indicator that determines electrical conductivity of rubbers is specific volumetric electrical resistance (ρv ). The purpose of this work is to investigate changes in this indicator during swelling and deswelling of electrically conductive rubbers. When considering the swelling process of rubbers in liquid media at a molecular level, an analogy of this process with mechanical deformation of the material is drawn and common features and differences of these processes are revealed.Methods. For rubber compositions based on paraffinate and alkyl sulfonate nitrile butadiene rubbers, the degree of their swelling and the change in linear dimensions in heptane and in gasoline grades 80, 92, and 95 were determined. The ρ v value was determined by a potentiometric method: the initial value was measured after temperature control of rubbers for 1 h at 120°C, and the second measurement was carried out after these rubbers were swollen in the solvents for 48 h, followed by drying at 20°C to a constant weight and repeated temperature control under the same conditions. Using an IR Fourier spectrometer, spectra of the solvents used were obtained before and after identification of the investigated rubber samples in them.Results. It was shown that the type of rubber and solvent used influence the degree of rubber swelling. Rubber compositions based on natural rubbers with a large amount of attached acrylonitrile, obtained in the presence of an alkyl sulfonate emulsifier, have the highest resistance to swelling. The effect of the used solvent on the change in the degree of swelling is determined by its affinity for rubber and the presence of polar additives that increase the octane number of gasoline. It was established that the linear change of the samples upon swelling in the indicated solvents varies according to the length and thickness of the samples. Results show that depending on the type of rubber used and the degree of its filling, the described rubber processing technology leads to a decrease in the ρ v value by 2 to 20 times. The greatest effect of ρ v reduction is observed in low-filled rubber compositions based on paraffinate nitrile rubbers. The spectra of the frustrated total internal reflection of the solvents after their interaction with the studied rubbers show that particulate extraction of dibutyl phthalate, which was used as a plasticizer in rubber compounding, takes place as a result of rubber swelling.Conclusions. The proposed method of rubber processing reduces the ρ v value by removing dibutyl phthalate from the studied rubbers and forming a more developed carbon–elastomer structure. Furthermore, it solves the problem of the negative effect of the plasticizer on the ρ v value of rubber without excluding it from the rubber composition.
Synthesis of alkyl-<i>gem</i>-dichlorocyclopropanes based on isoamylene fraction
Authors: Musin A. I. , Borisova Yu. G. , Raskil’dina G. Z. , Daminev R. R. , Rabaev R. U. , Zlotskii S. S. 
Published: January 2021

Objectives. The study aims to analyze the dichlorocarbenation of the isoamylene fraction, which is a mixture of 2-methyl-butene-1 and 2-methyl-butene-2, in order to obtain the corresponding alkyl-gem-dichlorocyclopropanes in quantitative yield, and also to determine their structure.Methods. In order to determine the qualitative and quantitative composition of the reaction masses, the following analysis methods were used: gas-liquid chromatography (using the Crystal 2000 hardware complex), mass spectrometry (using a Chromatec-Crystal 5000M device with NIST 2012 database), and nuclear magnetic resonance (NMR) spectroscopy (using a Bruker AM-500 device at operating frequencies of 500 and 125 MHz).Results. Alkyl-gem-dichlorocyclopropanes were synthesized from an isoamylene fraction in the presence of catamine AB as a catalyst. Alternatively, isomeric alkenyl-gem-dichlorocyclopropanes were obtained on the basis of isoprene, and by reduction, the corresponding alkyl-gemdichlorocyclopropanes were synthesized. The synthesized substances were analyzed by gasliquid chromatography, mass spectrometry, and NMR spectroscopy, as previously mentioned above.Conclusions. The results show that the dichlorocyclopropanation of the isoamylene fraction proceeds quantitatively with the formation of a mixture of 2-methyl-2-ethyl-1,1dichlorocyclopropane and 2,3,3-trimethyl-1,1-dichlorocyclopropane. Using isoprene, countersynthesis through successive dichlorocarbenation and hydrogenation was used to synthesize 2-methyl-2-ethyl-1,1-dichlorocyclopropane, one of the products of dichlorocarbenation of the isoamylene fraction.
Komparasi Model Prediksi Daftar Ulang Calon Mahasiswa Baru Menggunakan Metode Decision Tree Dan Adaboost
Authors: Rabbani Muhammad Naufal , Yusuf Ahmad , Rolliawati Dwi 
Published: January 2021

Every year, all the colleges hold new student enrollment. It is needed to start a new school academic year. Unfortunately, the number of students who resigned is considerably high to reach 837 students and caused 324 empty seats. The college’s stakeholders can minimize the resignation number if the selection phase of new students is done accurately. Making a machine learning-based model can be the answer. The model will help predict which candidates who potentially complete the enrollment process. By knowing it in the first place will help the management in the selection process. This prediction is based on historical data. Data is processed and used to train the model using the Adaboost algorithm. The performance comparison between Adaboost and Decision Tree model is performed to find the best model. To achieve the maximum performance of the model, feature selection is performed using chi-square calculation. The results of this research show that the performance of Decision Tree is lower than the performance of the Adaboost algorithm. The Adaboost model has f-measure score of 90.9%, precision 83.7%, and recall 99.5%. The process of analyzing the data distribution of prospective new students was also conducted. The results were obtained if prospective students who tended to finish the enrollment process had the following characteristics: graduated from an Islamic school, 19-21 years old, parents' income was IDR 1,000,000 to IDR. 5,000,000, and through the SBMPTN program.