bluuebunny/crossref_metadata_2025_split huggingface dataset:
Potentiality of Bioagents on Seed Quality Enhancement in Chickpea
Authors: Bharathi Venuturla , Durga Kilaru K. , Rani Madugula S. 
Published: May 2020

Planting healthy seeds and other inputs have an impact on seed quality, fungal invasion deteriorates the seed quality in soil and storage. Studies on chickpea carried out at Seed Research and Technology Center, Rajendranagar, Hyderabad during spring 2010-11 & 2011-12 revealed that benomyl was found effective followed by Pseudomonas fluorescens in the inhibition of mycelial growth of Fusarium solani. Maximum germination percentage was recorded with Benomyl (Benomyl 500 WP) @ 2 g/kg seed (treated check) and Tebuconazole @ 1 ml/ kg seed (95 per cent) followed by treatment with P. fluorescens @ 10 g/kg seed along with soil application of P. fluorescens @ 3 kg/acre (94 per cent). Maximization of growth parameters like root length, shoot length and total seedling length were observed with Benomyl @ 2 g/ kg seed as 17.0 cm, 10.3 cm and 27.3 cm, respectively. Considering seedling vigour index as an important seed quality character, P. fluorescens and Benomyl @ 2 g/kg seed recorded high seedling vigor index. The per cent recovery of infested seeds was found to be low with treated seeds when compared to the control.
Survey and Genetic Diversity of Grapevine Leafroll Associated Virus 2 in Algeria
Authors: Lehad Arezki , Selmi Ilhem , Louanchi Meriem , Aitouada Mouni , Mahfoudhi Naima 
Published: May 2020

Vineyards in western and center regions of Algeria were surveyed for the Grapevine leafroll-associated virus 2 (GLRaV-2). Analyses by DAS-ELISA and Reverse Transcription Polymerase Chain Reaction (RT-PCR) reveal 15, 8% prevalence. The genetic diversity of the GLRaV-2 population was studied by phylogenetic analyses of the HSP70h gene region of seven samples sequenced in this study and other sequences downloaded from GenBank. Results reveal segregation of the GLRav-2 population into six distinct groups. An estimation of the ratio of non-synonymous substitutions per non-synonymous site to synonymous substitutions per synonymous site indicated that HSP70h gene evolve under positive selection. Similarity plot constructed with representative sequence from each group confirmed previous results. All Algerian isolates belong to group PN. As far as we know, this is the first characterization of GLRaV-2 isolates from Algeria.
ANALISA KEKUATAN TARIK DAN DENSITAS KOMPOSIT POLIMER BERPENGUAT SERBUK CANGKANG TELUR
Authors: Kadir Abd , Saputra Muh Rabiul 
Published: May 2020

Material komposit saat ini mulai digunakan karena memiliki beberapa keuntungan jika dibandingkan dengan material logam, keramik dan polimer, diantaranya adalah massanya yang lebih ringan, tidak beracun, bahan baku melimpah, tahan korosi, ramah terhadap lingkungan, compatibility dengan bagian tubuh serta memiliki kekuatan yang baik. Partikulat komposit yang di perkuat dengan cangkang telur (egg shell chicken) di ayak menggunakan mesh 200 dengan ukuran partikel 75 µm dapat ditingkatkan dengan variasi berat komposit untuk mendapatkan kompsoisi yang baik dari komposit. Tujuan penelitian ini adalah mengetahui nilai kekuatan tarik dan densitas komposit dari variasi fraksi berat komposoit 20%, 30%, 40%, 50% dan 60%. Serbuk cangkang telur dibuat komposit dengan perbandingan epoxy resin dan epoxy hardener 72:27. Komposit dibuat dalam bentuk spesimen sesuai standart ASTM D 638-01 tipe I. kemudian dilanjutkan dengan pengujian kekuatan tarik, uji bending dan foto makro pada komposit.Hasil pengujian kekuatan tarik dan densitas dari variasi berat serbuk cangkang telur di peroleh kekuatan tarik optimum 24.823±6.67 MPa pada fraksi berat 30% dan nilai densitas tertinggi 1.376 ±0.04 gr/cm3 pada fraksi berat 60%.
ANALISIS STABILITAS FONDASI MESIN PEMBANGKIT HYDRO PADA SUNGAI BAWAH TANAH ZONA KARST
Authors: Sulha Sulha , Rifa’i Ahmad , Sarita Umran 
Published: May 2020

Penelitian ini bertujuan untuk menganalisis stabilitas fondasi mesin pembangkit listrik hydro pada sungai bawah tanah zona karst di Goa Seropan, menggunakan metode elemen hingga model plan-strain. Pendekatan analisis dilakukan pada tampang fondasi dengan menggunakan 4 model geometri. Material properti di lokasi konstruksi diambil dari hasil penelitian dan uji laboratorium IWRM Goa Seropan dari tim teknis UGM. Input gemoteri diperoleh dari data pengukuran lapangan yang disederhanakan, sedangkan input parameter tanah, batuan dan beton diperoleh dari data sekunder. Analisis model yakni beban statis dan dinamis menggunakan software PLAXIS v8.2, yang divalidasi berdasarkan perhitungan manual. Hasil simulasi numeris menunjukkan penambahan bored pile 0,20 meter pada sistem fondasi pembangkit hydro-power mampu melawan tegangan yang terjadi di tanah dasar akibat beban gempa dengan faktor aman sebesar 2,01. Sistem fondasi pada model geometri I, dengan dimensi pelat horisontal sebesar 0,40 meter, dinding vertikal sebesar 0,30 meter, dan bored pile sebesar 0,20 meter, cukup aman dan stabil terhadap beban statik maupun dinamik. Selisih diplacement vertikal maksimum dua titik fondasi pada model gemetri I akibat akumulasi pembebanan menyebabkan angular distortion sebesar 0,2159 cm (1/1112) masih relatif kecil dari angular distortion izin (1/750). Simpangan horisontal maksimum fondasi dan bangunan yang terjadi akibat beban gempa 355,4g adalah sebesar 0,379%, masih relatif aman jika ditinjau terhadap simpangan izin sebesar 1,54%. Software PLAXIS terbukti mampu memodelkan perilaku dinding goa dan struktur yang memikul beban statik dan dinamik dengan cukup baik.
Sistem Kendali Penerangan Ruangan Untuk Mengurangi Konsumsi Energi Listrik dengan Pemanfaatan Android dan Bluetooth
Authors: Isnawaty Isnawaty , Mayangsari Sri Astuti , Rachman Aditya 
Published: May 2020

Efisiensi penggunaan listrik merupakan salah satu aktivitas penting saat ini, karena keterbatasan dan dampak negatif terhadap lingkungan dari sumber-sumber energi fosil yang digunakan saat ini. Salah satu komponen yang mengkonsumsi energi listrik adalah penggunaan penerangan ruangan. Pengaturan pengoperasian penerangan kebanyakan dilakukan secara manual, dimana kurang efektif dan efisien. Hal ini disebabkan sistem kendali manual bergantung kepada seorang atau beberapa operator untuk menghidupkan atau mematikannya. Penelitian ini bertujuan merancang dan mengimplementasikan sistem kendali penerangan ruangan, yaitu menyalakan dan memadamkan serta mendeteksi penghuni dalam ruangan melalui smartphone android dan Mikrokontroler dengan memanfaatkan koneksi bluetooth. Teknologi keduanya dapat menciptakan sebuah alat dengan sistem yang dapat mempermudah dalam hal pengendalian listrik. Handphone android akan digunakan sebagai sentral pengendali (Tx) dengan penekanan tombol instruksi pada aplikasi yang dibangun pada android sebagai interface ke sistem mikrokontroler. Aplikasi dibangun dengan menggunakan metode pengembangan prototype sehingga dapat mengefisienkan waktu pengerjaan. Berdasarkan hasil pengujian yang dilakukan, sistem dapat bekerja dengan baik sesuai dengan tujuan. Program sistem kendali yang dibuat dapat dijalankan pada sistem operasi android, yang dapat difungsikan menyalakan dan memadamkan lampu sebanyak 3 buah. Pada pengujian yang dilakukan dengan menggunakan halangan dan tanpa halangan didapatkan jarak maksimal untuk pengontrolan dengan menggunakan halangan dapat berjalan dengan baik pada jarak ± 9 m, dan untuk pengujian tanpa halangan pengontrolan dapat berjalan baik hingga jarak ± 25 m.
Exploring how paramedics are deployed in general practice and the perceived benefits and drawbacks: a mixed-methods scoping study
Authors: Schofield Behnaz , Voss Sarah , Proctor Alyesha , Benger Jonathan , Coates David , Kirby Kim , Purdy Sarah , Booker Matthew 
Published: May 2020

BackgroundGeneral practice in the UK faces continuing challenges to balance a workforce shortage against rising demand. The NHS EnglandGPForward Viewproposes development of the multidisciplinary, integrated primary care workforce to support frontline service delivery, including the employment of paramedics. However, very little is known about the safety, clinical effectiveness, or cost-effectiveness of paramedics working in general practice. Research is needed to understand the potential benefits and drawbacks of this model of workforce organisation.AimTo understand how paramedics are deployed in general practice, and to investigate the theories and drivers that underpin this service development.Design & settingA mixed-methods study using a literature review, national survey, and qualitative interviews.MethodA three-phase study was undertaken that consisted of: a literature review and survey; meetings with key informants (KIs); and direct enquiry with relevant staff stakeholders (SHs).ResultsThere is very little evidence on the safety and cost-effectiveness of paramedics working in general practice and significant variation in the ways that paramedics are deployed, particularly in terms of the patients seen and conditions treated. Nonetheless, there is a largely positive view of this development and a perceived reduction in GP workload. However, some concerns centre on the time needed from GPs to train and supervise paramedic staff.ConclusionThe contribution of paramedics in general practice has not been fully evaluated. There is a need for research that takes account of the substantial variation between service models to fully understand the benefits and consequences for patients, the workforce, and the NHS.
Усовершенствованная конструкция оголовка самоизливающейся скважины
Authors: Opryshko B. , Shvetsov V. , Belavina O. 
Published: May 2020

Предложена усовершенствованная конструкция оголовка самоизливающейся водозаборной скважины. Оголовок относится к области технических средств, используемых для проведения автоматизированного мониторинга месторождений подземных питьевых вод с помощью погружных автономных датчиков-регистраторов. Оголовок используется на скважинах, расположенных на неохраняемых территориях. Показано, что установка данного оголовка на самоизливающихся скважинах позволяет автоматизировать мониторинг подземных питьевых вод на неохраняемых территориях при различных климатических условиях. При этом повышается точность результатов мониторинга, снижаются затраты на его проведение. Усовершенствованная конструкция оголовка имеет повышенную прочность.An improved design of the head of a blowing water well is proposed. The head falls within the domain of technological tools used for automated monitoring of underground drinking water deposits with the help of submerged stand-off recording sensors. The head is used in wells located in unguarded areas. It is demonstrated that the heads installed on blowing wells provide for automated monitoring of underground drinking water in unguarded areas under various climatic conditions. Herewith, the results of the monitoring improve, whereas the monitoring costs decrease. The improved design of the head is characterized by high-strength.
Очистка бытовых сточных вод обратным осмосом
Authors: Pervov A. , Tikhonov K. 
Published: May 2020

Исследована возможность обработки бытовых сточных вод методом обратного осмоса с целью получения высококачественной воды, пригодной для сброса в водоем рыбохозяйственного назначения или для технических нужд. Представлено обоснование возможности утилизации концентрата установки обратного осмоса путем радикального сокращения его расхода до величины, не превышающей 0,51 расхода поступающей на очистку воды, и выведения концентрата с установки вместе с обезвоженным осадком в виде его влажности. Проведены эксперименты, позволяющие определить изменение концентрации растворенных загрязнений в фильтрате мембранных аппаратов и снижение производительности мембран в процессе обработки сточных вод и сокращения расхода концентрата. Получены основные зависимости, позволяющие определить: требуемый расход концентрата установки в зависимости от концентрации взвешенных веществ и ХПК требуемые значения выхода фильтрата в зависимости от концентраций аммония в исходной воде. Описана методика определения площади поверхности мембран и количества мембранных аппаратов на каждой ступени обработки сточной воды. Определены оптимальные значения рабочего давления, экономические показатели установки в сравнении с другими технологиями очистки сточных вод.Possible treatment of domestic wastewater by the reverse osmosis with the purpose of producing high-quality effluent suitable for the discharge into fishery water bodies or for the use as process water has been investigated. Possible recycling of reject water from a reverse osmosis unit by drastically reducing the flow rate to the value less than 0.51 of the incoming flow and removing the reject water as a moisture component of the dewatered sludge is presented. Experiments have been carried out to determine the change in the concentration of dissolved solids in the filtrate of the membrane apparatus and a decrease in the membrane capacity in the process of wastewater treatment and reject water flow reduction. The obtained dependencies allow to determine the following: the required flow rate of the reject water depending on the concentration of suspended solids and COD the required filtrate yield depending on the concentration of ammonium in raw wastewater. The methodology for determining the surface area of membranes and the number of membrane apparatus at each stage of wastewater treatment is described. The optimal values of working pressure, economic indicators of the unit in comparison with other wastewater treatment technologies were determined.
Новый метод дистанционного обнаружения утечек воды из трубопроводов
Authors: Guseinli E.I.o. , Alieva A.D.g. 
Published: May 2020

Рассмотрена возможность разработки нового метода дистанционного обнаружения утечек воды из трубопроводов. Для выработки рекомендаций по оптимальной реализации высотного (самолетного или спутникового) зондирования с целью обнаружения утечек воды из трубопроводов проанализированы основные физические процессы, влияющие на результаты обнаружения утечек воды методом дистанционного зондирования. Показана необходимость учета следующих физических воздействий: зависимость отражательного спектра почвы от ее влажности зависимость оптической плотности атмосферного аэрозоля (AOD) от относительной влажности (RH) инверсная взаимосвязь между температурой и влажностью воздуха зависимость отраженного сигнала почвы от температуры из-за сушки почвы. Предложен новый метод обнаружения утечек из трубопровода, предусматривающий повторную проходку трассы водопровода и сравнение полученных спектрометрических результатов с учетом влияния температуры воздуха на влажность почвы и степень увлажненности атмосферного аэрозоля.The possibility of developing a new method for remote detection of water leaks in pipelines is considered. To develop the recommendations on the optimal implementation of altitude (aircraft or satellite) sounding in order to detect water leaks in pipelines, the main physical processes that affect the results of detecting water leaks by remote sensing are analyzed. The need for taking into account the following physical effects is shown: the dependence of the reflective spectrum of the soil on its moisture content the dependence of the optical density of atmospheric aerosol (AOD) on the relative humidity (RH) inverse relationship between the air temperature and humidity temperature dependence of the reflected signal of the soil due to soil drying. A new method for detecting leaks in pipelines is proposed that involves re-driving the water pipeline route and comparing the obtained spectrometric results taking into account the influence of the air temperature on the soil moisture and the degree of the atmospheric aerosol humidity.
Водопроводные осадки: состав, свойства, утилизация при очистке сточных вод(обзор)
Authors: Kofman V. 
Published: May 2020

Современные схемы водоподготовки неизбежно связаны с образованием водопроводных осадков, объем которых становится самостоятельной проблемой, а ее масштаб сопоставим с масштабом собственно производства питьевой воды. В этой связи утилизация водопроводных осадков рассматривается на сегодняшней день в качестве приоритетного направления разработок в данной области. По результатам практически тридцатилетних исследований обозначились основные области потенциального применения водопроводных осадков, одной из которых является очистка воды и сточных вод. Результаты многочисленных исследований свидетельствуют о перспективности использования водопроводных осадков в качестве адсорбентов фосфатов, мышьяка, а также тяжелых металлов: Cu, Cd, Cr, Co, Pb, Hg, Zn, Ni, V, Mo, Ga и Se. В условиях пилотных и опытно-промышленных испытаний проведены исследования по извлечению из водопроводных осадков коагулянтов и непосредственному использованию водопроводных осадков в качестве коагулянтов, а также их применению для улучшения показателей обезвоживания избыточного активного ила сточных вод. Получены хорошие результаты использования водопроводных осадков в составе основания биоинженерных сооружений, а также в качестве катализаторов активации персульфата и пероксомоносульфата в процессах деструкции органических микрозагрязнений в водной среде.Advanced water treatment schemes are inevitably associated with water sludge generation, the volume of which becomes a separate problem that is comparable to the scale of the actual production of drinking water. In this regard, utilization of water sludge is considered today as a priority task in the research and development in this area. Based on the results of almost thirty years of studies, the main areas of potential use of water sludge have been identified one of them being water and wastewater treatment. The results of numerous studies evidence the perspectiveness of using water sludge as an adsorbent of phosphates, arsenic, and also heavy metals: Cu, Cd, Cr, Co, Pb, Hg, Zn, Ni, V, Mo, Ga, and Se. Under the conditions of pilot tests, studies were conducted on the extraction of coagulants from water sludge, and on the direct use of water sludge as a coagulant, as well as on its use for enhancing excess activated sludge dewatering. Using water sludge in the foundation of bioengineering facilities, as well as a catalyst for the activation of persulfate and peroxomonosulfate in the destruction of organic micropollutants in the aquatic environment also made good results.
Prediction of interface and vacancy segregation energies at silver interfaces without determining interface structures
Authors: Otani Ryuken , Kiyohara Shin , Shibata Kiyou , Mizoguchi Teruyasu 
Published: May 2020

Abstract
Interfaces play a crucial role in determining the functional and mechanical properties of materials. However, predicting interface properties is not straightforward because the atomic arrangements at the interface are different from those in the bulk. Hence, in this study, we discovered a descriptor from the bulk that helps predict the interface properties without the need to determine the interface structure. The descriptors related to the angle of elevation effectively described the structure units on both the bulk surface and optimized interface. Our model successfully predicted the interface and vacancy segregation energies at silver interfaces without using the interface structure.
Competing priorities: Student perceptions of helps and hindrances to language acquisition during study abroad
Authors: Pyper Marcie J. , Slagter Cynthia 
Published: May 2020

Multiple studies have investigated the effect of language contact on language proficiency, testing the assumption that the study abroad context means greater contact with the target language (L2). Other studies have examined the context of L2 interactions, considering host families, contact with community members, and interactions with non-native-speaking peers. While these studies are helpful, larger scales studies are needed to determine how students are interacting with native and non-native speakers during study abroad. The current study examines student perceptions of helps and hindrances to L2 gain during semester-long study abroad of more than 100 students studying Spanish in Spain, Honduras, and Peru. Participants completed surveys patterned after the Language Contact Profile of Freed, Dewey, Segalowitz, and Halter (2004) and took the Versant Language Test before and after their study abroad experience. They also participated in a post-program interview which was subsequently transcribed, encoded and analyzed. Results suggest that students experience competing priorities in decisions governing L1 vs L2 use and that student intentionality is key to successful language learning.
Social Identity Formation in Higher Education Students and Its Relationship with Attachment Patterns
Authors: Al-zoubi Emad Mohamad 
Published: May 2020

The study aimed to investigate the social identity formation status (achievement, moratorium, foreclosure, and diffusion) and identify the relationship between identity formation and attachment patterns (secure, anxiety, and avoidant). The second aim is to detect differences according to the demographic background of the higher education students (the education year and birth order). The study sample consisted of 203 students enrolled in the Balqa’a applied university in Jordan. Two scales were used to achieve purposes of study the psychological identity status scale and attachment patterns scale. The study outcomes asserted that there is a statistically significant difference in the foreclosure identity status among the first-year and fourth-year students in favor of the first year. Likewise, there are statistically significant differences in the diffusion identity status among the first-year, third-year, and fourth-year students in favor of the first-year students. And there are statistically significant differences in the achievement identity status due to the interaction of the education year and birth order. Moreover, the study results indicated a positive proportional and statistically significant relationship between secure attachment and achievement identity. There is a statistically significant relationship between anxiety attachment and the three formation status of social identity (achievement, foreclosure, and diffusion). And there are statistically significant relationships between avoidant attachment and all formation status of social identity (achievement, foreclosure, and diffusion). These relationships are negative to achievement and moratorium identities and positive to foreclosure and diffusion identities.
Challenges and Coping Strategies for Enhancing the Effectiveness of Distance Learning in Achieving Business Education Objectives
Authors: Onojetah Sunday Omorohwovo 
Published: May 2020

The study investigated the challenges and coping strategies for enhancing the effectiveness of distance learning in achieving the objectives of Business Education in Delta State, Nigeria. The descriptive survey research design was employed. A total of 73 lecturers participated in the study. All the 73 lecturers participated in the study because of their manageable size. The medium of data collection was a 35-item structured questionnaire, which was validated by experts in Measurement and Evaluation and Business Education. The instrument had a reliability index of 0.81. Mean, standard deviation and Analysis of Variance (ANOVA) were used to analyse the data collected for the study. The study identified 10 administrative challenges, 10 technology-based challenges and 13 strategies for achieving the objectives of the Business Education programme under the distance learning education system. The study recommended adequate funding, recruitment of qualified facilitators, production and distribution of course materials to students and lecturers, the appointment of educational administrators and planners as Directors of Centres and regular in-service training for the facilitators in the use of ICT in instructional delivery.