bluuebunny/crossref_metadata_2025 huggingface dataset:
ЕКОЛОГІЧНА ЕФЕКТИВНІСТЬ ОХОЛОДЖЕННЯ ПОВІТРЯ НА ВХОДІ ГТУ В РІЗНИХ КЛІМАТИЧНИХ УМОВАХ
Authors: Радченко Андрій Миколайович , Радченко Микола Іванович , Зонмін Ян , Кантор Сергій Анатолійович , Портной Богдан Сергійович
Published: August 2019

The operation of gas turbine unites significantly depends on the ambient air temperature at the inlet, and the higher it is, the greater the specific fuel consumption is spent for the production of a unit capacity (mechanical/electrical energy), and, accordingly, the more harmful substances are removed to the atmosphere with exhaust gases. To reduce the negative impact of unproductive fuel consumption during the operation of gas turbine units at elevated ambient temperatures, the inlet air cooling is applied. The paper studies the ecological efficiency of gas turbine unite inlet air cooling, taking into account the variable climatic operation conditions for regions with different climatic conditions over a period of five years (2014-2018): temperate climate of Ukraine (on the example of cities Sumy and Ternopol) and the subtropical climate of the PRC (cities Beijing and Nanjing). The annual reduction in emissions of carbon dioxide CO2 and nitric oxide NOX was chosen as indicators for assessing the environmental effect of air cooling. It has been shown that deeper cooling gas turbine unite inlet air to 7...10 °C provides almost a half to two times greater reduction in specific fuel consumption, respectively, and harmful emissions compared with traditional cooling to 15 °C by the most widespread absorption lithium-bromide chillers, and for the temperate climate of Ukraine the relative effect is much greater than for the subtropical climatic conditions of the PRC. Reducing carbon dioxide CO2 over five years for the PRC climate when cooling air to 10 °C is approximately more than 500 t, and for Ukraine – more than 240 t, and NOX nitric oxide – about 3.5 t for China and 1.6 t for Ukraine, while with traditional cooling to 15 °C: more than 300 t for China, and for Ukraine about 120 t, and nitric oxide NOX – about 2 t for China and 0.7 t for Ukraine. Based on the results of a rough assessment of the environmental effect of cooling the ambient air at the inlet of gas turbine units, in the temperate climate of Ukraine, deep cooling of the air is especially advisable, which provides almost twice the effect compared with traditional cooling to 15 °C.
ИСПОЛЬЗОВАНИЕ ЦИКЛОНА И ЭФФЕКТА "МИКРОВЗРЫВОВ" КАПЕЛЬ ВОДОТОПЛИВНОЙ ЭМУЛЬСИИ ПРИ КОМПЛЕКСНОЙ ОЧИСТКЕ ВЫХЛОПНЫХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ
Authors: Корниенко Виктория Сергеевна , Радченко Роман Николаевич
Published: August 2019

Obtaining additional energy due to the deep utilization of the internal combustion engine (ICE) heat losses al-lows saving fuel used for the operation of the ship's power plant. This accordingly leads to a reduction of the emissions of harmful substances into the atmosphere, contributes to meet the more stringent standards of the International Maritime Organization (IMO) governing the limits of these emissions. The study aims to develop the system of complex exhaust gas cleaning for an internal combustion engine (ICE). For solving the tasks in the technology of proposed method there were 6 stages of technological process envisaged. Based on experimental and theoretical studies, a setup for complex exhaust gas cleaning using a cyclone and the effect of "microexplosions" of a water-fuel emulsion (WFE) droplet was developed. It has been established that as a result of activated WFE combustion we obtain at the engine outlet exhaust gases of a corresponding composition with a reduced amount of toxic ingredients down to 35 % and below and most importantly – an equimolar ratio of NO2 /NO to NOx. Experimental studies have shown that in the condensate acid under these conditions, an average concentration of about 57 % is established, which ensures a sharp increase in the absorption of SO2 and NOx. The presence of an equimolar (or almost this) NO2 /NO ratio in gases ensures the passivation of the condensation surface in exhaust gas boiler (EGB) from carbon steel. This ensures a sharp decrease in the low-temperature corrosion intensity, an increase in the operating reliability of condensation surfaces and the possibility of a sharp increase in the engine exhaust gas utilization depth to 80...90 °C instead of 160 °C. For the final gas cleaning, it was proposed to install a venturi scrubber and a cyclone-absorber on the gas path of ICE. Based on experimental studies, it has been established that the installation of a condensation heating surface in the EGB reduces the NOx content in gases by 55 %, SO2 - by 50 %, and the content of solid particles - by 3 times. The developed complex system can be used to clean the ICE gases to the level recommended by IMO.
ЭКСПЕРИМЕНТАЛЬНОЕ ОПРЕДЕЛЕНИЕ ОСТАТОЧНОЙ ПРОЧНОСТИ ЭЛЕМЕНТОВ КОНСТРУКЦИЙ ПАРАШЮТОВ, ИСЧЕРПАВШИХ ЗАДАННЫЙ СРОК ЭКСПЛУАТАЦИИ
Authors: Миронов Кирило Вікторович , Кучерявий Євген Федорович
Published: August 2019

To make a decision on determining the periods of safe operation of parachute systems that have exhausted a given resource, it is necessary to know the parameters of their actual technical condition. Experimental destructive methods for determining the parameters of residual strength are considered: breaking strength and relative deformations during the breaking of the standard specimens.Parachute design elements to be examined include parachute dome fabrics, carcass reinforcement ribbons, strops, and suspension system belts. In order to ensure that all requirements set forth by regulatory documents for conducting an experiment with textiles, specialized devices have been developed, designed, manufactured and tested experimentally. These devices provide strength experiments on a universal tensile machine designed to work with samples of metallic materials.The need to create specialized devices is caused by a very wide range of braking forces (from tens to several thousand newtons), as well as by the specifics of synthetic textile materials of the parachute design elements. A set of devices has been developed that provide the required conditions for conducting rupture experiments on samples of textile materials. The created devices provide sufficient compressive force of the sample in the clips without slip-page and without violating the integrity of the contact surface of the studied synthetic textile materials. Ensuring that the sample is sufficiently compressed in the clamping devices of the tearing machine is ensured by special transitional gaskets and methods for creating a compressing force on the sample. Compressing devices and devices for conducting experiments with low-strength specimens of the dome fabric, with medium-strong reinforcing skeleton tapes, strops and high-strength straps of the suspension system are created. In order to speed up the preparation of samples for the experiment, methodologies have been created that ensure the required length of the working part of the sample and its fixation without warps. A universal strain gauge was developed to determine the change in the length of the working section of the specimen in 100 mm. Installing the meter on the sample under study allows you to measure displacements up to rupture. The meter is fastened to the specimen using spring clips. The developed devices were tested during the experiment with hundreds of samples of the structural elements of 3 parachutes.
ТЕХНИКО-ЭКОНОМИЧЕСКОЕ ОБОСНОВАНИЕ ЭФФЕКТИВНОСТИ ПРИМЕНЕНИЯ ПЛАНЕТАРНЫХ ШЛИФОВАЛЬНЫХ ГОЛОВОК
Authors: Калиниченко Николай Юрьевич
Published: August 2019

The development of aviation technology is based on the introduction of new progressive technologies, the use of new materials, the improvement of technological equipment and tools. Improving aircraft engines often leads to greater use of wear-resistant, heat-resistant, heat-resistant materials based on nickel and titanium, which are characterized by low machinability. Blade processing of such alloys faces many difficulties: increased equipment wear, increased machine setup time for the operation, high cutting forces, increased wear of the cutting tool, increased processing time, etc. All this harms productivity, an increase in production time and a decrease in economic efficiency. The use of the operation of creep feed grinding instead of blade milling operations, pulling, planning and abrasive operations (pre-grinding, final grinding) reduces the time to manufacture parts while maintaining its quality and accuracy. The study of the technical and economic aspect of the proposed technology of creep feed grinding instead of preliminary and final grinding operations is of interest. The paper compares two methods of abrasive machining: traditional grinding and creep feed grinding on the SPD-30B surface grinder from Jotes (Poland) with a planetary grinding head (PGH) installed on its spindle. The study was conducted when grinding the castle part of turbine blades. The removable allowance was 3.8 mm. The processing according to the traditional grinding scheme took place in 10 passes, while the processing time was about three and a half minutes. The processing under the scheme of creep feed grinding with the use of PGH for 4 passes took about a minute of machine time. It should be noted a significant increase in productivity at the first transition when removing an allowance of 3.5 mm in the mode of deep grinding compared to traditional grinding 2.1 times. On the second and third transitions, the performance of both methods is virtually the same.
МОДЕЛИРОВАНИE ПРОЦЕССА ГОРЕНИЯ В ФАКЕЛЬНЫХ ВОСПЛАМЕНИТЕЛЯХ ГТД
Authors: Торба Юрий Иванович , Планковский Сергей Игоревич , Трифонов Олег Валерьевич , Цегельник Евгений Владимирович , Павленко Дмитрий Викторович
Published: August 2019

The aim of the work was the development and testing of methods for modeling the combustion process in the torch igniters of gas turbine engines. To achieve it, the finite element method was used. The main results of the work are the substantiation of the need to optimize the torch igniters of gas turbine engines. The practice of operating torch igniters of various designs has shown that the stability of their work depends on the parameters of gas turbine engines and external factors (air and fuel temperature, size of fuel droplets, fuel and air consumption, as well as its pressure). At the same time, the scaling of the geometry of the igniter design does not ensure its satisfactory work in the composition of the GTE with modified parameters. In this regard, an urgent task is to develop a combustion model in a flare igniter to optimize its design. A computational model of a torch igniter for a gas turbine engine of a serial gas-turbine engine in a software package for numerical three-dimensional thermodynamic simulation of AN-SYS FLUENT has been developed. To reduce the calculation time and the size of the finite element model, recommendations on the adaptation of the geometric model of the igniter for numerical modeling are proposed. The mod-els of flow turbulence and combustion, as well as initial and boundary conditions, are selected and substantiated. Verification of the calculation results obtained by comparison of numerical simulation with the data of tests on a specialized test bench was performed. It is shown that the developed computational model makes it possible to simulate the working process in the torch igniters of the GTE combustion chambers of the investigated design with a high degree of confidence. The scientific novelty of the work consists in substantiating the choice of the combustion model, the turbulence model, as well as the initial and boundary conditions that provide adequate results to the full-scale experiment on a special test bench. The developed method of modeling the combustion process in gas turbine torch igniters can be effectively used to optimize the design of igniters based on GTE operation conditions, as well as combustion initialization devices to expand the range of stable operation of the combustion chamber.
ПРИМЕНЕНИЕ ТЕРМОХИМИЧЕСКОЙ УТИЛИЗАЦИИ В ЭНЕРГЕТИЧЕСКИХ УСТАНОВКАХ ВЫСОКОТЕХНОЛОГИЧНЫХ СУДОВ
Authors: Чередниченко Александр Константинович
Published: August 2019

The research’s subject is the processes of energy transformation of fuel in the ship power plant with thermo-chemical waste heat recovery. Modern approaches to assessing the energy efficiency of ship power plants were considered. The characteristics of traditional and perspective ships were analyzed. Passenger ships (including Ro-Ro ferry and cruise ships), offshore ships (including FPSO, FSRU, MODU, OSV, etc) and LNG/LPG carriers are classified as high-tech ships. It is discussed the application of thermo-chemical waste heat recovery in power plants of high-tech ships. It is proposed to increase the efficiency of fuel use by using synthesis gas obtained through thermo-chemical heat recovery of secondary energy resources of ship engines. The main objective of the study is to analyze the energy efficiency of steam thermo-chemical transformation of fuel in ship power plants. It is presented the design scheme of the marine power plant for an offshore platform. It is shown the mathematical model of the ship gas turbine installation with thermo-chemical heat recovery by steam conversion of associated gas. The associated gas conversion efficiency was determined by the heat potential of the exhaust gases and was calculated based on the thermal balance of the thermochemical reactor. The reactor has two stages. It is presented the results of mathematical modeling of processes in plant-based on gas turbine engine of the simple cycle under conditions of fixed output power, the fixed temperature of the gas in the turbine’s front for environmental parameters according to ISO 19859: 2016. It is revealed the efficiency of the scheme which used steam conversion of associated gas in the two-stages reactor. Calculation of thermo-chemical conversion efficiency indicators showed the complete conversion of heavy hydrocarbons. The increase in the energy efficiency of the installation is 10...12%. The results obtained coincide with previous studies and confirm the effectiveness of the use of thermo-chemical heat recovery in power plants of high-tech ships. The research results can be used in the promising marine power plants designing.
СОКРАЩЕНИЕ ВЫБРОСОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ ПРИ СЖИГАНИИ ВОДОТОПЛИВНЫХ ЭМУЛЬСИЙ C ИСПОЛЬЗАНИЕМ ЭФФЕКТА "МИКРОВЗРЫВОВ"
Authors: Корниенко Виктория Сергеевна , Радченко Роман Николаевич , Щербак Юрий Георгиевич
Published: August 2019

The requirements of international organizations in the field of environmental protection, reduction of heat losses and thermal emissions from the burning of organic fuels, increasing the efficiency and reliability of operation both stationary and ship's power plants (SPP) acutely raise the question of the development of complex cleaning technologies. The study aims to develop a system for complex exhaust gas cleaning of the internal combustion engine (ICE). For performing tasks in the technology of the proposed method were envisaged 6 stages of a technological process. It was established that the primary and decisive factor for solving the tasks in development a complex system for improving environmental indicators, reducing corrosion and heat emissions is the organization of the water-fuel emulsion (WFE) combustion process in the ICE based on sulfur fuels with water content of about 30% and using the effect of "microexplosions" drops of water. The conducted experimental studies have shown that when WFE is burned with water content Wr = 30 %, an equimolar (or almost this) NO2: NO ratio necessary for activating the absorption properties of exhaust gases is created in gases. The results of studies have shown that under these conditions, passivation of the metal surface with a temperature below of dew point temperature of H2SO4 vapors takes place and therefore it becomes possible to significantly reduce the low-temperature corrosion of the condensation surface. This made it possible to install a low-temperature condensing heating surface with a surface temperature below the dew point of sulfuric acid vapor at the outlet of exhaust gas boiler after the ICE. Analysis of the experimental dates shows that: 1 m2 of condensing surface absorbs 3.4 mg/m3 of NOx and 0.89 mg/m3 of SO2, which makes it possible to decrease the NOx concentration by 1.55 times and SO2 - in 1.5 times. There is a process of precipitation of toxic solid ash and soot particles: from 150...170 mg/m3 (at the outlet of ICE when WFE is burnt with Wr = 30 %) to 70...90 mg/m3 after the condensing surface. Consumption of water with alkaline properties decreases when NOx, SO2, CO2 concentration is reduced in front of scrubbers. Reducing pollution of heating surfaces increases the cleaning period of EGB in 2.5 times. The developed complex system can be used to clean the ICE gases to the level recommended by IMO.
ИДЕНТИФИКАЦИЯ И КОНТРОЛЬ НЕУСТОЙЧИВЫХ РЕЖИМОВ РАБОТЫ ГТД ПО СИГНАЛАМ ДАТЧИКОВ ВИБРАЦИИ В ПРОЦЕССЕ ИСПЫТАНИЙ
Authors: Войтенко Игорь Валериевич
Published: August 2019

Ensuring reliable and timely diagnostics and control of a rotating stall and self-oscillations on the fan blades and the first stages of GTE compressors for aviation and ground application with special bench tests, at the engine development stage, is a relevant topic. To solve the problem, spectral analysis of the vibration sensor signals, the bench control system, registered during the engine check for unstable modes of operation, was performed. Diagnostic components that appear in the signals of vibration sensors with rotating breakdown and auto-oscillations at the moments of the appearance of stresses on the blade components of the strain gauge signals are revealed. The existence of the dependence of the blade component and the diagnostic components on the rotor speed is determined. The dependence obtained makes it possible to isolate diagnostic components from the broadband signal, similar to the construction of vibrations using the first rotor harmonics. A method was developed to control rotating breakdown and self-oscillations in the course of GTE tests, with designated limit levels proportional to the stress levels on the fan blades. It is shown that the best, from the ease of implementation and efficiency, a method of monitoring unstable modes of operation is the method with the use of servo filters at diagnostic frequencies. At the same time, it is technically easier to use the available vibration sensors used in monitoring the first rotor harmonics than to install additional pulsation sensors, performing modifications to the engine design, without mentioning the work package required for strain gauging. Besides, the set of signals of standard and technological vibration sensors of the bench control allows determining the diagnostic frequencies of any element of the engine design: fan, compressor, turbine. After tuning the vibration equipment to the required diagnostic frequencies, a specialist with no skills in diagnosing vibration signals can maintain control, which is convenient for the first tests of the engine in operation, where the experimenter controls the flight.
МЕТРОЛОГИЧЕСКОЕ ОБЕСПЕЧЕНИЕ КАЛИБРОВКИ КАНАЛОВ КОНТРОЛЯ ВИБРАЦИИ В СОСТАВЕ РЕГУЛЯТОРА АВИАДВИГАТЕЛЯ
Authors: Буряченко Анна Григорьевна
Published: August 2019

There are shown the normative documentation requirements concerning complete and element wise calibration of the information-measuring systems measuring channels. It is about requirements, which are applicable for tests area of aviation turbo-engines and their componentry, including the electronic regulators FADEC-type. There are given short information concerning the experience of JSC "Element" – certificated developer and manufacturer of such regulators – on providing of calibration (testing) of measuring channels with the use of imitators of electric signals of engine transducers. There is given the information concerning the ranges of measuring of vibrating accelerations and vibrating frequencies, which are required for providing of the engine vibrating monitoring and the information about the extreme high magnitudes of vibrating acceleration, which is interesting for the developer of the engine. There are covered the problems, which the developer of regulators deals with necessary to execute complete calibration of vibration measuring channels (jointly with a primary transducer), including the limitations laid on by the possibilities of accessible facilities of creation of vibration with the controlled magnitudes of vibration acceleration and vibration frequency in the required ranges of measuring. There are described the workplaces organized in JSC "Element" at the methodical help of SE "Ukrmetrteststandard" for providing of complete calibration of vibration measuring channels in laboratory terms at the enterprise-manufacturer, including the workplace with the resonator, which was specially developed and made. There are brought the results over of development, making and uses of the resonator, which provides controlled vibrations with the extreme level of vibration acceleration – 400 g and more at the predetermined level of vibration frequency.There is shown the expediency of element wise measuring channels calibration with the use of imitators of sensors signals for serial producing of regulators. There is explained the necessity to organize workplaces for the realization of complete calibration on enterprise-developer of FADEC regulators, which provide verification results got with imitators.
АНАЛІЗ ЕФЕКТИВНОСТІ ТЕПЛОВИКОРИСТОВУЮЧОЇ ТЕРМОПРЕСОРНО-ЕЖЕКТОРНОЇ ХОЛОДИЛЬНОЇ МАШИНИ
Authors: Коновалов Дмитро Вікторович
Published: August 2019

One of the ways to increase the energy efficiency of ejector refrigerating machines is to use of thermopressor technologies, which are based on to use of the process of thermogasdynamic compression. This process consists in contact cooling and at the same time increasing the gas or steam pressure. The thermopressor application in the ejector refrigerating machines cycle installed at the outlet of the ejector, allows, by increasing the pressure during vapour contact cooling to a saturation tempera-ture, to increase the ejection coefficient U and, accordingly, the thermal coefficient z. A number of refrigerants were chosen for analysis of cycle of ejector refrigerating machines, among which those traditionally is used for ejector refrigerating ma-chines, and a number of other refrigerants that can be used in ejector refrigerating machines based on the possibility of using the thermopressor. It is possible to in-crease the ejector refrigerating machines efficiency by using the thermopressor while ensuring a greater temperature difference. With the temperature difference 60–100 oC, the relative pressure increase is mostly positive. The following refrigerants have the most significance: R717, R134a, R227ea, R1234ze(E), R1234yf. Analysis of the ejector refrigerating machines scheme by using the thermopressor shows that the greatest efficiency at the highest possible boiling points in the generator tg is the refrigerants: R142b, R600, R1233zd(Е), R245fa.
МЕТОДЫ КОНТРОЛЯ ВНУТРЕННЕЙ ПОЛОСТИ ОХЛАЖДАЕМЫХ ЛОПАТОК ТВД С ПЕРСПЕКТИВНЫМИ СИСТЕМАМИ ОХЛАЖДЕНИЯ
Authors: Шакало Руслан Юрьевич , Халимонюк Марек
Published: August 2019

The cooled turbine blades are very complex, labor-intensive parts, both for manufacturing and for inspection. With the development of aviation gas-turbine engines, the design of cooled turbine blades is becoming more complicated. To create new promising cooled turbine blades requires the introduction of new advanced manufacturing technologies and new progressive methods of dimensional control. This paper discusses the existing methods of inspection, which are used in the manufacture of turbine blades in mass production. Their advantages and disadvantages are given. The results of the work carried out in the framework of the international project "AERO.UA" are presented. The work was carried out to develop the inspection method of the internal cavity of the high-pressure turbine (HPT) blade with a promising cooling system developed at Ivchenko-Progress. The inspection of the internal cavity of the HPT blade with a promising cooling system was performed using computed tomography. Computed tomography performed at the Air Force Institute of Technology (ITWL) Warsaw on the General Electric X-Ray phoenix V | tome | X m tomograph. According to the results of testing the inspection method, the possibility of identifying manufacturing defects, the detection of which under the conditions of steady-state production is associated with very labor-intensive operations, is shown, and in some cases, inspection is impossible at all without destroying the part or performing expensive repairs. An assessment was made of the possibility of monitoring the geometrical dimensions of the internal cavity and external surfaces of cooled turbine blades. With the use of computed tomography, the dimensional control is possible with an accuracy of 0.01 mm. But to bind the blades to the base surfaces specified in the drawing when scanning, you must use a special snap. To confirm the possibility of controlling the dimensions specified in the drawing, it is necessary to continue work on scanning the cooled turbine blades using special tools.
PROFESIONALISME ANGGOTA DPRD PROVINSI BENGKULU DALAM MENJALANKAN TUGAS POKOK DAN FUNGSI
Authors: Suri Evsa Wulan
Published: August 2019

Penelitian ini hendak menganalisis profesionalisme anggota DPRD provinsi Bengkulu dalammenjalankan tugas pokok dan fungsi.Menggunakan metode kualitatif melalui pendekatan analisiskualitatif.Subjek penelitian adalah anggota DPRD Provinsi Bengkulu. Hasil penelitian (1) Secarakeseluruhan aspek kompetensi, integritas, kredibilitas dan akuntabilitas yang merupakan indikatorprofesionalisme perlu dicapai guna memperbaiki kualitas legislator yang dibutuhkan publik, (2)Kualifikasi pendidikan dan pengalaman organisasi berpengaruh pada kompetensi legislator, (3)Fungsi kaderisasi partai politik yang belum terlaksana sempurna, (4) Sikap rasional rakyat dalampilkada dipengaruhi sistem pemilu legislatif yang kompleks, (5) Alhasil sikap kurangprofesionalisme memicu pelanggaran kode etik, kasus moralitas.
EVALUASI KEBIJAKAN PERCEPATAN PENANGGULANGAN KEMISKINAN DI KABUPATEN SUBANG
Authors: Nuraida Nuraida , Rusli Budiman , Setianingrum Setianingrum , Rahmatunnisa Mudiyati
Published: August 2019

Kemiskinan merupakan masalah yang banyak terjadi hampir di seluruh wilayah Indonesia, tanpa terkecuali di Kabupaten Subang. Kemiskinan di wilayah ini  masih cukup tinggi sekalipun banyak program penanggulangan kemiskinan telah di lakukan.  Untuk itu, maka penelitian ini  difokuskan pada Evaluasi Kebijakan Percepatan Penanggulangan Kemiskinan di Kabupaten Subang, mengingat program-program yang ada hanya dinikmati tidak lebih dari 20 persen penduduk miskin yang ada.

Untuk menjawab masalah tersebut digunakan kriteria penilaian yaitu menggunakan konsep evaluasi William N.Dunn yang mendasarkan kriteria penilaian  untuk enam dimensi, yaitu efektivitas, efisiensi, kecukupan, perataan, responsivitas dan ketepatan.

Metode yang dipakai dalam penelitian ini adalah metode kualitatif. Adapun sumber data diperoleh dari sumber data primer dan sekunder. Dengan teknik pengumpulan data dilakukan melalui studi lapangan dan studi pustaka,dengan wawancara langsung, observasi, forum group discussion (FGD), dan studi kepustakaan. Informan dalam penelitian ini berasal dari Kementrian Sosial, Bappeda Jawa Barat, unsur pemerintah daerah, tim TKPKD, unsur perguruan tinggi dan masyarakat sebagai kelompok penerima manfaat.

Hasil penelitian menunjukkan bahwa dari sisi efektivitas mulai dari pembangunan system, mekanisme penyaluran sampai kepada sumber daya finansial maupun sumberdaya manusia belum optimal. Begitupun untuk efisiensi. Pamanfaatan sumberdaya yang ada juga belum maksimal. Responsivitas rendah, karena rentang kendali dan kontrol lemah. Perataan juga belum  terdistribusi dengan baik, sehingga ketapatan sasaran bagi rumah tangga miskin belum mencapai sasaran yang ditetapkan dalam program-programpercepatan. Dari hasil evaluasi kinerja  yang menjadi  hambatan utama di Kabupaten Subang adalah otorisasi atau kewenangan, disusul kemudian efisiensi dan efektivitas, disiplin dan inisiatif. Bahwa jika dilihat dari dampak Kebijakan Percepatan Penanggulangan Kemiskinan terhadap kelompok penerima manfaat di Kabupaten Subang, tidak berdampak cukup besar bagi perubahan kehidupan mereka. Temuan hasil riset adalah bahwa kebijakan percepatan penanggulangan kemiskinan akan berhasil apabila ditopang oleh political will pemerintah yang melibatkan kekuatan struktur birokrasi di dalamnya selain peran serta aktif masyarakat dan dunia usaha
Comprehensive analysis of territorial risk factors for estimating and managing the natural and technogenic safety
Authors: Nicheporchuk V. V. , Penkova T. G.
Published: September 2019

This paper presents an approach to the comprehensive analysis of territorial risk factors for estimating and managing the natural and technogenic safety based on taking into account the maximum number of factors aff ecting the possibility of occurrence and scale of hazard events. The authors describe the principles of information support of the assessment of territorial risks based on the creation of information resources and the application of modern technologies for consolidation and analysis of monitoring data.
Protective mechanisms of melatonin on caprine spleen injury induced by cadmium (Cd): an in vitro study
Authors: Majumder Romit , Datta Madhuri , Pal Palash K , Bhattacharjee Bharati , Chattopadhyay Aindrila , Bandyopadhyay Debasish
Published: August 2019

Current study explores

the potential mechanisms of melatonin on cadmium-induced spleen tissue injury

of goat. Spleen tissues were incubated with different concentrations (50, 100,

200, 400 and 600 µM) of cadmium acetate (Cd), respectively and the lipid

peroxidation of the tissue was measured. It was found that Cd at the level of

400 µM induced maximum spleen damage among other concentrations. Thus, Cd 400

µM was selected to examine whether melatonin treatment can protect against this

damage. The results showed that Cd increased the oxidative stress in the spleen

tissue either by elevating pro-oxidant enzymes, or, by suppressing the variety

of antioxidant enzymes and thus, to increase the intracellular reactive oxygen

species (ROS). Melatonin treatment at the concentrations of 0.25, 0.5 and 1 mM

significantly reduced all these alterations, respectively. At the level of

cellular organelles, Cd caused mitochondrial morphological and functional

injuries. These include mitochondrial surface distortion and inhibitions of glycolytic,

Krebs cycle, and respiratory chain enzymes. Melatonin at a concentration of 0.5

mM almost completely preserved Cd induced mitochondrial pathological

alterations. Cd

pollution is a cause of serious health hazard world wide, particularly in the

developing areas and currently, there is no specific remedy for Cd toxicities.

The results suggest that melatonin is a promising therapeutic agent to

combat Cd-induced oxidative stress and it deserves further investigation

clinically.
Cyclic 3-hydroxymelatonin exhibits diurnal rhythm and cyclic 3-hydroxymelatonin overproduction increases secondary tillers in rice by upregulating MOC1 expression
Authors: Choi Geun-Hee , Back Kyoungwhan
Published: August 2019

Cyclic 3-hydroxymelatonin (c3OHM) is a major metabolite of melatonin in plants produced by the enzymatic action of melatonin 3-hydroxylase (M3H). However, the function of c3OHM in plants is unclear. Here, we report that M3H mRNA and c3OHM levels display diurnal rhythms with peaks at night, but not in a circadian manner. This diurnal rhythmicity occurred predominantly in the late vegetative growth stage (8 weeks after germination), but was absent in the early vegetative growth stage. Transgenic rice plants overexpressing or underexpressing M3H were generated to investigate the physiological roles of diurnal production of c3OHM. The M3H-overexpression (OE) line exhibited higher M3H activity and c3OHM production than the wild-type, and vice versa for the M3H‑underexpression rice (RNAi). The seedling growth phenotype of the OE and RNAi lines was comparable to that of the wild-type but exhibited pleiotropic phenotypic defects at the reproductive stage, such as decreased height, biomass, grain yield, and fertility. Of note, the OE rice showed significantly increased numbers of secondary tillers and panicles. The increase in tiller number of the OE line was linked to increased expression of tiller-related genes, such as MOC1 and TB1, suggesting that the diurnal rhythm of c3OHM production is associated with the tiller number, a pivotal agronomic trait governing grain yield in rice.
Melatonin and the heart circadian clock of euglycemic and type 2 diabetic male rats: a transcriptional evaluation
Authors: Sinesio-Jr Jose , Bargi-Souza Paula , Matos Raphael A , Leite Eduardo Almeida , Buonfiglio Daniella Carmo , Andrade-Silva Jessica , Motta-Teixeira Livia , Curi Rui , Young Martin , Cipolla-Neto Jose , Peliciari-Garcia Rodrigo Antonio
Published: August 2019

Diabetes increases risk of various comorbidities, including retinopathy, neuropathy, and cardiovascular disease, comprising both ischemic and non-ischemic cardiomyopathy. Cardiac dysfunction during diabetes is associated with perturbations at histologic, metabolic, biochemical and molecular levels. The circadian clock is misaligned in multiple organs during diabetes, including the heart. Such alterations in clock function have been postulated to play a causal role in cardiac dysfunction even though the mechanisms leading to circadian misalignment are currently unknown. Melatonin has been reported to alter heart circadian clock components and its circulating levels are decreased during diabetes. These observations led to the hypothesis that decreased melatonin levels during diabetes could be related to mismanagement of the heart clock. To evaluate this hypothesis, in the current study male Wistar and non-obese type 2 diabetic Goto-Kakizaki (GK) rats were given melatonin supplementation in their drinking water during the dark phase (for 12-wks), followed by assessment of clock component and the mRNA expression of the clock-controlled genes in the hearts of these animals. Melatonin supplementation significantly altered mRNA expression of targeted genes in both euglycemic and diabetic rat hearts. Collectively, under the condition of diabetes, the jeopardized pineal melatonin synthesis with misalignment of cardiac circadian clock components may likely mediate heart metabolic dysfunction, and/or even cause cardiovascular diseases.
Melatonin: Protection of the Intervertebral Disc
Authors: Reiter Russel J , Rosales-Corral Sergio , Sharma Ramaswamy
Published: August 2019

Low back pain (lumbar pain) due to injury of or damage to intervertebral discs is common in all societies.  The loss of work time as a result of this problem is massive.  Recent research suggests that melatonin may prevent or counteract intervertebral disc damage. This may be especially relevant in aging populations given that endogenous melatonin, in most individuals, dwindles with increasing age. The publications related to melatonin and its protection of the intervertebral disc are reviewed herein, including definition of some molecular mechanisms that account for melatonin’s protective actions.
Needs for Reproductive Health Education for Deaf Students in Singaraja District, Bali Province
Authors: Ariantini Nyoman Sri , Kurniati Desak Putu Yuli , Duarsa Dyah Pradnyaparamita
Published: August 2019

Introduction. Adolescents with hearing impairment face a number of exclusion due to their limitation, including lack of access to information on reproductive health. This study was aimed to explore needs for sexual and reproductive health education for students with hearing impairment at SLB B Negeri Singaraja. Methods. A qualitative study was conducted at Singaraja District. Data were collected at through in-depth interviews to 19 informants. Informants were purposively selected based on their specific roles. Our informants included ten students with hearing impairment, one head of school, five teachers, and three parents or carers. Data were analysed using a thematic approach. Results. The majority of students with hearing impairment were having low level of knowledge associated to sexual and reproductive health. However, sexual and reproductive health practices between adolescents with and without hearing impairment were generally comparable. Needs for sexual and reproductive health education must cover several elements: (1) education material must be tailored based on age, (2) learning methods should be tailored based on their intellectual ability, and (3) learning methods must use contextual and real model approach to allow better transfer of information. Teachers faced difficulty to provide sexual and reproductive health education for students with hearing impairment even though some modules are already available. Conclusion. Students with hearing impairment at SLB B Singaraja State need more simple learning pictures and videos that are accompanied by written texts and sign language movements so that it is easier to understand the material delivered by the teacher, where the reproductive health education material needed is age-appropriate material and the development of each individual, while the reproductive health learning methods needed by deaf students are simpler learning methods while still using sign language.
Unsur Supranatural Dalam Teks Lamut �Kerajaan Palinggam�
Authors: Cahyani Irni
Published: September 2019

Supernatural is above natural things, where supernatural is more aimed at natural phenomenon and is kebatinan culture / world. While the lamut is an oral literature performed by a single player (palanutan). The single player brings a certain story through the speech which in certain parts of his speech accompanied by a wasp of tarbanglamut. In this study, researchers examined the supernatural element in the text of the lamut "Palinggam Kingdom."

This analysis yields the conclusion that the characters in the lamut text "Palinggam Kingdom" have supernatural powers, among others: 1) can transform themselves into birds, white walut, snakes, parents, mountains, beetles, and children; 2) can fly; 3) can make a very large boat of Balimbur Dragon; 4) can turn hair into arrows; 5) can stop the winds; 6) can make the god fall in the palm of the hand; 7) may disappear; 8) can rule the eagle; 9) can fight dragons, and 10) can kill giants.
Problematika Guru Dalam Pembelajaran Matematika Pada Pendidikan Inklusi
Authors: Lastaria Lastaria , Istiqlaliyah Istiqlaliyah
Published: September 2019

Penelitian ini menitik beratkan pada problematika yang dihadapi guru dalam pembelajaran matematika pada pendidikan inklusi anak diskalkulia, serta cara guru dalam mengatasinya. Selain itu, rumusan masalah dalam penelitian ini adalah 1) bagaimana problematika yang dihadapi guru dalam pembelajaran matematika pada pendidikan inklusi anak diskalkulia?, 2) bagaimana cara guru mengatasi problematika dalam pembelajaran matematika pada pendidikan inklusi anak diskalkulia? Penelitian ini adalah penelitian kualitatif. Adapun yang menjadi subjek dalam penelitian ini adalah guru matematika dan guru anak berkebutuhan khusus. Penelitian ini menggunakan tiga teknik pengumpulan data, yaitu observasi, wawancara, dan dokumentasi sebagai teknik pendukung dalam pengumpulan data penelitian. Selanjutnya data diabsahkan dengan triangulasi dan dianalisis dengan tiga tahap, yaitu data reduksi, data display, dan penarikan kesimpulan. Hasil penelitian 1) problematika yang dihadapi oleh guru dalam pembelajaran matematika pada pendidikan inklusi anak diskalkulia adalah kurang mampu menepatkan metode pembelajaran untuk anak diskalkulia dikarenakan perbedaan latar pendidikan guru dan siswa yang tangani (kurang mendapatkan perhatian khusus dari pemerintah terkait kebutuhan anak-anak ABK yang ada di sekolahan umum sehingga menjadi problem bagi guru yang bidang keilmuannya berbeda dengan pendidikan ABK), kurangnya minat, interaksi, kemampuan anak diskalkulia, menganggap pelajaran matematika itu cukup sulit, jenuh, dan membosankan, pelajaran matematika diajarkan di siang hari, dan keterbatasan alokasi waktu (LW dan N), 2)
Upaya Meningkatkan Hasil Belajar Ekonomi Dengan Menggunakan Model Kooperatif Tipe Investigasi Kelompok Pada Peserta Didik
Authors: Puspitasari Eny , Supardi Supardi
Published: August 2019

This study aims to determine the increase in economic learning outcomes and activities of students of class XI IPS 1 in Palangka Raya Muhammadiyah High School in economic learning using cooperative learning models of group investigations. The method used in this study was to use the Classroom Action Research design. The subjects in this study were 23 students. The results of the study showed that the learning outcomes and learning activities of students increased. This is evident from the average score of economic learning activities of students in the first cycle to the second cycle, which is 43.8 which includes a category increased to 47 which includes a very increasing category. the pre-test learning outcomes averaged 52.82 with 39% completeness, the post-test results in the first cycle average score 77.39 with completeness 69.5%, and the post-test results in cycle II averaged 99.13 with completeness 100% criteria are very achievable.
Hubungan Penggunaan Fasilitas Belajar Dan Motivasi Belajar Dengan Hasil Belajar Ekonomi
Authors: Susanto Jojon , Sonedi Sonedi
Published: September 2019

The purpose of this study was to determine whether there was a significant relationship between: (1) the use of learning facilities with results, (2) motivation to learn with learning outcomes, (3) use of learning facilities and motivation to learn with learning outcomes. This research is quantitative descriptive. the number of samples is 104. The sample selection uses the Probability Sampling technique of simple Random Sampling. Data was collected using questionnaire and documentation methods. Test requirements analysis using the Normality test. The results of the study: (1) There is a positive relationship between the use of learning facilities and learning outcomes, analysis: rx1y = 0. 206 and rtable = 0. 195. (2) There is a positive relationship between motivation to learn and learning outcomes, analilis: rx2y = 0. 225 and rtable = 0. 195. (3) There is a shared positive relationship between the use of learning facilities and learning motivation with learning outcomes, analysis: rx1x2y = 0. 298 and rtable = 0. 195. The relationship is included in the low category because based on the calculation of the coefficient of determination the relationship between the use of learning facilities and learning motivation with economic learning outcomes is found at 8. 88%.
Faktor-Faktor Kesulitan Belajar Mata Pelajaran IPS Ekonomi Kelas XI di SMAN 2 Katingan Hilir
Authors: Wahyudi Tri , Endriani Santi
Published: September 2019

This study aims to determine the factors that cause learning difficulties of the XI-class Economics Social Sciences course at SMAN 2 Katingan Hilir. This study uses descriptive quantitative methods. The population in this study were all students of class XI IPS-1 and class XI IPS-2, which numbered 48 participants in the study. This study is a population study. the instruments used in this study were questionnaires. Based on the data the researchers collected was analyzed using a percentage formula. Based on the presentation of the data, it is obtained a general description of the factors of learning difficulties of Social Sciences Economics subjects in class XI at SMAN 2 Katingan Hilir namely internal factors, motivational indicators with a dominant category of 70.5%, attention indicators with less dominant categories of 42%, indicators interest with the dominant category is 62.5%, the memory indicator with the less dominant category is 44%.
Upaya Meningkatkan Hasil Belajar Ips Dengan Menggunakan Model Pembelajaran Kooperatif Tipe Student Teams Achievement Division (STAD) Dengan Berbantuan Media Gambar Kelas Iv Sd Muhammadiyah Pahandut Palangka Raya Tahun Pelajaran 2017/2018
Authors: Yiran Nureeta , Suniati Suniati
Published: September 2019

Penelitian ini bertujuan untuk: (1) Untuk mendeskripsikan aktivitas belajar peserta didik kelas IV SD Muhammadiyah Pahandut Palangka Raya pada mata pelajaran IPS dengan menggunakan Model Kooperatif Tipe Student Teams Achievement Division (STAD) dengan berbantuan Media Gambar, (2) Untuk meningkatkan hasil belajar IPS menggunakan model Kooperatif Tipe Student Teams Achievement Division (STAD) dan berbantuan Media Gambar pada peserta didik kelas IV di SD Muhammadiyah Pahandut Palangkaraya.

Jenis penelitian yang digunakan oleh peneliti adalah menggunakan Penelitian Tindakan Kelas (PTK) yang berusaha memecahkan atau menjawab permasalahan yang dihadapi pada situasi sekarang. Subjek dalam penelitian ini adalah terdiri dari 25 orang peserta didik, 10 orang laki-laki dan 15 orang perampuan. Untuk teknik pengumpulan data yang digunakan adalah observasi dan tes. Sedangkan dalam penelitian ini mengunakan analisis data secara kualitatif dan kuantitatif.

Hasil penelitian ini menunjukkan bahwa : (1) Aktivitas belajar IPS peserta didik menjadi baik selama mengikuti proses pembelajaran dengan mengunakan model Kooperatif Tipe Student Teams Achievement Division (STAD) dan berbantuan Media gambar. (2) Adanya peningkatan hasil belajar IPS peserta didik selama mengikuti pembelajaran dengan mengunakan model Kooperatif Tipe Student Teams Achievement Division (STAD) dan Media gambar.
Upaya Meningkatkan Hasil Belajar Matematika Dengan Menggunakan Model Explicit Instruction Dan Course Review Horay Berbantu Media Manipulatif pada Peserta Didik Kelas V B Di SDN-3 Langkai Palangkaraya Tahun Pelajaran 2017/2018
Authors: Putri Desi Dwi Mariana , Supriyadi Arif
Published: September 2019

Penelitian ini bertujuan untuk (1) Mendeskripsikan aktivitas belajar Matematika dengan menggunakan model Model Explicit Instruction dan Course Review Horay berbantu media manipulatif. (2) Meningkatan hasil belajar Matematika dengan menggunakan model model Explicit Instruction dan Course Review Horay berbantu media manipulatif.

Jenis penelitian ini adalah penelitian tindakan kelas (PTK). Subyek penelitian ini adalah peserta didik kelas V B berjumlah 27 peserta didik, terdiri dari 15 laki-laki dan 12 perempuan. Teknik pengumpulan data dalam penelitian ini menggunakan tes dan observasi. Analisis data menggunakan analisis kualitatif dan kuantitatif.

Hasil Penelitian menunjukkan bahwa: (1) Aktivitas belajar peserta didik dengan menggunakan model Explicit Instruction dan Course Review Horay berbantu media manipulatif pada peserta didik menjadi meningkat, nilai rata-rata siklus I adalah 2,87 dengan kriteria kurang baik dan siklus II nilai rata-rata 3,32 dengan kriteria baik. (2) Ada peningkatan hasil belajar Matematika dengan menggunakan model Explicit Instruction dan Course Review Horay berbantu media manipulatif pada peserta didik kelas. Nilai rata-rata pre test yaitu 44 dengan ketuntasan klasikal 25%, siklus I nilai rata-rata 63 dengan ketuntasan klasikal 51,85%, dan pada siklus II nilai rata-rata 79 dengan ketuntasan klasikal 92,59%.