bluuebunny/crossref_metadata_2025 huggingface dataset:
不同方法合成纳米氧化锌的光催化性能比较研究
Authors: 肖 生彩
Published: April 2020

用固相研磨法和液相沉淀法合成了纳米氧化锌颗粒。两种方法得到的纳米氧化锌都用红外和X射线粉末衍射及透射电镜进行了表征。再用两种方法合成的纳米氧化锌作催化剂,利用太阳光为光源对甲基橙溶液进行光催化实验,对其光催化性能进行对比,实验结果表明：液相沉淀法合成的纳米氧化锌具有更好的光催化性能。
二噁英类有机化合物的环境监测分析
Authors: 王 焱
Published: April 2020

二?英高度的持久性、强烈的亲合性使其几乎无处不在,并在生物组织中极易积累,从而成为人们所熟悉的环境中毒性最大的有机化合物之一。根据近年来二?英的污染现状,对环境中二?英的污染来源及途径进行了探讨,并论述了二?英的监测分析方法,同时提出了对二?英新技术的研究。
“互联网+环保”新思路下的大气模拟及生态保护
Authors: 高 玲燕 , 张 征宇 , 沈 杰
Published: April 2020

本文结合现有案例对互联网+环保模式进行分析,并对大气污染中排放的污染物、污染物来源及模型数值模拟内容展开阐述,希望对大气污染治理有所帮助,改善生态环境。
Profilaxia de Mucosite Induzida por Quimioterapia Ambulatorial: Revisão Sistemática
Authors: De Melo Manzi Natália , Diniz dos Reis Paula Elaine
Published: April 2020

Introdução: A mucosite bucal e uma das complicações decorrentes do tratamento quimioterápico antineoplásico. Cabe ao enfermeiro prover adequado gerenciamento do cuidado de forma a garantir qualidade e segurança ao paciente. Objetivo: Avaliar evidencias disponíveis na literatura sobre quais são as intervenções utilizadas para profilaxia de mucosite bucal induzida por quimioterapia antineoplásica ambulatorial em pacientes com câncer. Método: Revisão sistemática da literatura. Realizou-se busca nas seguintes bases eletrônicas de dados: PubMed/MEDLINE, CINAHL, LILACS e Cochrane Library, por meio do cruzamento dos seguintes descritores Mucositis, Stomatitis, Neoplasms, Antineoplastic Agents, Drug Therapy, Prevention & Control e Chemotherapy. Foram estabelecidos os seguintes critérios de inclusão: estudos clínicos publicados na integra que tinham como objetivo primário avaliar uma intervenção na prevenção de mucosite bucal induzida por quimioterapia. Foram contemplados artigos envolvendo adultos e crianças, cuja data de publicação compreendesse o intervalo de 1/1/2002 a 31/7/2013, nos idiomas inglês, espanhol e português. Resultados: Vinte e quatro estudos abordaram o uso de crioterapia, glutamina, cuidado bucal, palifermina, alopurinol, clorexidina, sulfato de zinco, laser, amifostina, goma de mascar, sulcrafato, fator intestinal humano de recombinação, kefir e vitamina E. A crioterapia se destacou como uma intervenção com níveis de evidencias fortes para prevenção de mucosite bucal decorrente do tratamento quimioterápico com 5-flurouracil. Outras intervenções, apesar de apresentarem resultados positivos quanto a prevenção de mucosite bucal, necessitam de outros estudos que corroborem suas conclusões. Conclusão: Mais estudos prospectivos e bem delineados, que avaliem a efetividade de formas de profilaxia da mucosite bucal decorrentes de tratamento quimioterápico ambulatorial, são necessários.
Nutrição e produtividade do algodoeiro em função de doses de níquel e regulador de crescimento
Authors: Faria Raiana Crepaldi de , Junior Enes Furlani , Vieira Noemi Cristina De Souza , Paixão Amanda Pereira , Silva Dayane Bortoloto da , Melero Mariana Moreira , Pereira Mirella Dos Santos
Published: April 2020

Buscando o aumento da produtividade do algodoeiro, várias pesquisas vêm sendo realizadas com o uso de reguladores de crescimento e novas fontes nutricionais, com a finalidade de acelerar o desenvolvimento da cultura. O objetivo do trabalho foi avaliar o efeito da adubação foliar com doses de níquel associado ou não a aplicação do regulador de crescimento no algodoeiro cultivado em condições edafoclimáticas do cerrado. O experimento foi conduzido na Fazenda de Ensino, Pesquisa e Extensão (FEPE), da Faculdade de Engenharia de Ilha Solteira – UNESP, localizada no município de Selvíria-MS. O delineamento experimental utilizado foi o de blocos ao acaso em esquema fatorial 5x2, com quatro repetições. A aplicação do níquel foi via foliar e parcelada em três aplicações 47, 60 e 75 dias após a emergência (DAE) nas doses (0, 50, 150, 300 e 400 g ha-1). O regulador de crescimento utilizado foi o cloreto de mepiquat aplicado uma única vez, aos 70 DAE. O aumento das doses de níquel não influenciou os teores dos macronutrientes, inclusive de nitrogênio, porém, a utilização do regulador de crescimento juntamente com a dose de 400 g ha-1 de Ni ocasionou o menor acúmulo dos teores foliares de Ca+2 e Mg+2. A aplicação das doses de Ni elevaram a concentração deste nutriente nas folhas do algodoeiro. A produtividade de algodão em caroço e de fibra não foram influenciadas pelo aumento das doses de níquel. No entanto, para massa de 20 capulhos, doses acima de 200 g ha-1 se mostraram prejudiciais. A aplicação do regulador de crescimento diminuiu a massa de 20 capulhos, porcentagem e produtividade de fibra do algodoeiro.
Nonlinear Vibration Analysis of Axially Functionally Graded Microbeams Based on Nonlinear Elastic Foundation Using Modified Couple Stress Theory
Authors: Alimoradzadeh Mehdi , Salehi Mehdi , Mohammadi Esfarjani Sattar
Published: April 2020

In this study, a non-classical approach was developed to analyze nonlinear free and forced vibration of an Axially Functionally Graded (AFG) microbeam by means of modified couple stress theory. The beam is considered as Euler-Bernoulli type supported on a three-layered elastic foundation with Von-Karman geometric nonlinearity. Small size effects included in the analysis by considering the length scale parameter. It is assumed that the mass density and elasticity modulus varies continuously in the axial direction according to the power law form. Hamilton's principle was implemented to derive the nonlinear governing partial differential equation concerning associated boundary conditions. The nonlinear partial differential equation was reduced to some nonlinear ordinary differential equations via Galerkin's discretization technique. He's Variational iteration methods were implemented to obtain approximate analytical expressions for the frequency response as well as the forced vibration response of the microbeam with doubly-clamped end conditions. In this study, some factors influencing the forced vibration response were investigated. Specifically, the influence of the length scale parameter, the length of the microbeam, the power index, the Winkler parameter, the Pasternak parameter, and the nonlinear parameter on the nonlinear natural frequency as well as the amplitude of forced response have been investigated.
Дослідження проблем гендерного нерівноправ'я на ринку праці України
Authors: Вахлакова В.В. , Крамчанінова А.О. , Голікова В.А.
Published: April 2020

Устатті розглянуто проблеми зайнятості населення України в контексті гендерної складової. Висвітлено особливості функціонування різних соціально-демографічних груп населення України у сфері зайнятості. Проаналізувано ситуацію на ринку праці України та надано оцінку його сучасного стану з урахуванням гендерної складової, на основі світового досвіду запропонувано заходи щодо вирішення окресленої проблеми. Проаналізовано рівень економічної активності населенняРозглянуто проявигендерного нерівноправ'яна ринку праці та запропоновано заходи щодо подолання гендерної дискримінації та подальшого ефективного розвитку ринку праці.
Аналіз розвитку та сучасного стану інформаційно-комунікаційних технологій в Україні
Authors: Марков М.Є.
Published: April 2020

У статті розглянуто тенденції розвитку та сучасний стан інформаційно-комунікаційних технологій в Україні. Дослідження поєднує власні оцінки розвитку інформаційних та комунікаційних технологій в Україні з оцінками, що надаються профільними міжнародними організаціями, наявну інформацію узагальнено за допомогою SWOT-аналізу. Визначено, що сфера ІКТ в Україні розвивається дуже швидко та є найбільш перспективною. Досліджено вплив сфери інформаційно-комунікаційних технологій на соціально-економічний розвиток у країні через тісний зв’язок капітальних інвестицій у ІКТ та валовий внутрішній продукт на душу населення в Україні.
NEW PLAYMAKER IN SCIENCE EDUCATION: COVID-19
Authors: Usak Muhammet , Masalimova Alfiya R. , Cherdymova Elena I. , Shaidullina Albina R.
Published: April 2020

Nowadays, we all are sitting in our homes and watching what is going on in the world, as if we are watching a science fiction movie, in which we have the leading role. Novel Coronavirus (COVID-19), which first appeared in Wuhan (Abdulamir, & Hafidh, 2020; Ait Addi et al., 2020 Aljofan, & Gaipov, 2020; Sorooshian, 2020) and later turned into a pandemic affecting the entire world, does not discriminate between the degree of democracy, finances, religion, gender, ethnicity and region. World is a fireplace and we all are “burning”. In the countries where the pandemic is progressing rapidly, all health professionals, regardless of their area of expertise, have been called to the field. This reminds us of the need to revive the general perspective that we have begun to forget. That is to say, no matter how specific our area of expertise is, we are obliged to keep the general perspective of our field and basic doctrines constantly fresh.
CROSS-NATIONAL COMPARISONS OF STUDENTS’ SCIENCE SUCCESS BASED ON GENDER VARIABILITY: EVIDENCE FROM TIMSS
Authors: Aşkın Öyküm Esra , Öz Ersoy
Published: April 2020

Identifying key determinants of success plays an important role in efforts of assessing the current state of educational practices and implementing effective actions to improve academic performance. Given how important is accurate identification of these determinants for valid comparisons, the aim of this research was to present extensive comparative results on 8th grade students' science success for 39 countries. To this end, a total number of 229,493 students' information obtained from the last cycle of Trends in International Mathematics and Science Study was handled. Unlike previous studies in which success has been tried to be explained with some factors, this research extended the literature by investigating the effective factors as well as gender-related variability on science success with a holistic view. Using heterogeneous choice models, unobserved heterogeneity caused by gender difference was tested and controlled. The findings showed that gender variability was evident for 10 countries. Furthermore, factors associated with students' future educational goals, home educational resources and confidence were found as the common determinators of science success in all participant countries. Another notable finding was all factors, except time spent on doing homework, tended to differentiate the success status between girls and boys of 22 countries.
Keywords: cross-country comparison, gender variability, heterogeneous choice models, science success.
BIOLOGY CONTENT AND CLASSROOM EXPERIENCE AS PREDICTORS OF CAREER ASPIRATIONS
Authors: Šorgo Andrej , Špernjak Andreja
Published: April 2020

In Slovenia, as in many other countries, interest in seeking careers in science, technology and engineering-related disciplines is low, which can be recognized as a problem. The influence of general interest in biology, the content, and teaching of Biology in 9-year basic school (age 14 -15) and general upper-secondary schools (age 15 – 18) on the career aspirations of students was explored. Based on structural models built on the responses of 522 general upper secondary school students from Slovenia, it was revealed that the corresponding constructs (1) The content of Biological disciplines; (2) The Biology content taught in 9-year basic school; (3) The Biology content taught in general upper secondary school; (4) The teaching of lower secondary school Biology; and (5) The teaching of general upper secondary school Biology--are only weak predictors, if at all, of career aspirations in 15 different career streams. The greatest predictive power is a general interest in biological topics. However, the influence of the content of school curricula and corresponding teaching is a weak and even negative predictor of career aspirations in some cases. Keywords: biology teaching, career aspirations, lower secondary school Biology, SEM analysis, upper secondary school Biology.
The effect of self-regulated learning strategies on the primary school students' independent learning skill
Authors: Sukowati Sukowati , Sartono E. Kus Eddy , Pradewi Gunarti Ika
Published: April 2020

Students have Self-Regulated Learning (SRL) which can motivate themselves to arrange personal goals, plan strategies done to achieve the goal, until to evaluate the behaviors. Besides that, students can be more responsible to themselves so that the learning independence of students can be formed. This research aimed to investigate the level of SRL and learning independence of elementary school students, and to investigate the influence of SRL towards the learning independence of elementary school students. This research used a quantitative approach with the comparative research design. The population in this research was 387 students with the sample used was 194 students taken randomly using Slovin’s formula. The instrument used in this research consisted of 24 questions by using 4-point Likert Scale. The data collection technique was used by comparing SRL of students. The data analysis was conducted by SPSS version 24. The finding of the research showed that SLR and learning independence of elementary school students was on the category medium and has a tcount of 8,516. In addition, the F-test result obtained was 240, 783. Therefore, it can be concluded that there is a significant influence between SRL and the learning independence of elementary school students. The futher reasearch must be based on previous studies. The influence of SRL on student independence and the factors that influence needed to described more comperhensive.
Corporate Governance and The Modification of Audit Opinion: A Study in The Jordanian Market
Authors: Saaydah Mansour
Published: April 2020

The objective of this study is to examine the relationship between some Corporate Governance indicators and the probability of modifying the independent auditor opinion in the Jordanian market. The sample consists of 104 non-financial firms listed on Amman stock Exchange for the year 2015. The logistic regression via SPSS is used to analyze the data. The results show that firm’s profitability (measured by ROA) and the number of institutional investors on the board of directors are significant negative predictors of the probability of receiving modified audit opinion by the firm. That is the higher the firm’s ROA and the larger number institutional investor representatives on the board of directors the less likely the firm will receive a modified audit opinion. On the other hand, the results also show that the board of directors’ size is significant positive predictor of receiving a modified audit opinion by the firm. That is the larger the size of the board of directors the more likely the firm will receive a modified audit opinion. Although, it is an unexpected result it agrees with some other studies results. Finally, board independence, board activity and the presence of audit committee have no significant impact on the type of audit opinion the firm receives.
A COMPETENCY IN IMPLEMENTING THE MEDIUM TERM EXPENDITURE FRAMEWORK (KPJM) OF BUDGET FIELD ON FINANCIAL AND REGIONAL INCOME DEPARTMENT OF WEST SULAWESI
Authors: Andira Tri Susanti Resqi , Basri Muhammad , Halim Halim
Published: April 2020

This study aims to determine the extent of the readiness of the competency of the Civil Servant (ASN) in the implementation of the Budget Sector Medium Term Expenditure Framework (KPJM) of budget field on financial and regional income department of west sulawesi.  The method used in this study is a qualitative method with a descriptive approach, where this study uses interview guidelines as the main instrument of data collection. The informants in this study came from the staff of the budget department of BPKPD west sulawesi one person, secretary of BPKPD one person, the head of the budget department one person, the head of the sub-sector of the budget three people, the budget staff seven person. The results of the research are that the Medium Term Expenditure Framework system program is ready to be applied in the Budget Sector of the West Sulawesi Province Finance and Regional Revenue Management Agency as one of the needs in streamlining the management of the budgeting process, as well as the required competencies which have been a concern in terms of the ability to operate the Medium Term Expenditure Framework system is ready, only a little constrained by the absence of socialization or training and the absence of work guidelines for the application of (KPJM) as a reference for operating the (KPJM) system.
ANALISIS DETERMINASI INFLASI DI INDONESIA
Authors: Ginting Ari Mulianta
Published: April 2020

Inflation is one of the macroeconomic indicators of concern for the government. The high inflation rate could disrupt the economy. This study tried to analyze the factors that cause inflation in Indonesia. This study used a qualitative and quantitative approach using secondary data period 2004-2014. The results of the qualitative analysis showed that in the period 204-2014 inflation rate in Indonesia was fluctuated  While the results of the regression analysis VECM, indicating that the inflation rate in Indonesia is influenced by the variable of  exchange rate, money supply and level of consumption. While the GDP variable has a negative influence on inflation. In order to control the inflation rate the government could use macroeconomic variables such as exchange rates, the money supply well. Besides controlling public consumption at a good level and increase the production of goods and services to meet community needs.

 

Inflasi merupakan salah satu indikator ekonomi makro perhatian bagi pemerintah. Tingkat inflasi yang tinggi dapat mengganggu perekonomian. Penelitian ini mencoba untuk menganalisis faktor-faktor yang menyebabkan inflasi di Indonesia. Penelitian ini menggunakan pendekatan kualitatif dan kuantitatif dengan menggunakan periode data sekunder 2004-2014. Hasil analisis kualitatif menunjukkan bahwa tingkat inflasi periode 204-2014 di Indonesia berfluktuasi. Sementara hasil VECM menunjukkan bahwa tingkat inflasi di Indonesia dipengaruhi oleh variabel nilai tukar, uang beredar dan tingkat konsumsi. Sementara itu variabel GDP memiliki pengaruh negatif pada inflasi. Untuk mengendalikan tingkat inflasi pemerintah dapat menggunakan variabel ekonomi makro seperti nilai tukar, uang memasok baik. Selain mengendalikan konsumsi masyarakat pada tingkat yang baik dan meningkatkan produksi barang dan jasa untuk memenuhi kebutuhan masyarakat.
ANALISIS PENGUNGKAPAN CORPORATE SOCIAL RESPONSIBILITY BERDASARKAN GLOBAL REPORTING INITIATIVE G4
Authors: Wulolo Crista Fianica , Rahmawati Isna Putri
Published: April 2020

This study aims to analyze the quantity and quality disclosure of CSR (Corporate Social Responsibility) using reporting guidance Global Reporting Initiative (GRI), which consists of ten aspects, namely strategy and organization, organizational profile, material aspects and boundary identified, Stakeholders, reporting profiles, governance, aspects and integrity, economic, environmental, and social. The sample in this research is mining companies listed on BEI in 2014 and 2015 as many as 32 companies. The research method used is descriptive analysis, with analysis technique in the form of content analysis. The results show that the average quantity and quality of CSR disclosure in mining companies in 2014 and 2015 is still low.

 

Penelitian ini bertujuan untuk menganalisis kuantitas dan kualitas pengungkapan CSR (Corporate Social Responsibility) dengan menggunakan pedoman pelaporan keberlanjutan GRI (Global Reporting Initiative) G4, yang terdiri dari sepuluh aspek, yaitu strategi dan organisasi, profil organisasi, aspek materiak dan boundaryteridentifikasi, hubungan dengan pemangku kepentingan, profil laporan, tata kelola, aspek dan integritas, ekonomi, lingkungan, dan sosial. Sampel dalam penelitian ini adalah perusahaan sektor pertambangan yang terdaftar di BEI tahun 2014 dan 2015 sebanyak 32 perusahaan. Metode penelitian yang digunakan adalah analisis deskriptif, dengan teknik analisis berupa content analysis. Hasil penelitian menunjukkan bahwa rata-rata kuantitas dan kualitas pengungkapan CSR pada perusahaan sektor pertambangan tahun 2014 dan 2015 masih tergolong rendah.
PENGARUH KINERJA KUALITAS LAYANAN YANG DIRASAKAN DAN NILAI PELANGGAN TERHADAP PEMBELIAN ULANG (STUDI PADA BUSWAY TRANSJAKARTA)
Authors: Nazwirman Nazwirman
Published: April 2020

The study was conducted on the Transjakarta busway. The purpose of the study was to analyze and determine the effect of perceived service quality variables and customer value variables on repurchase variables. The results of the study partially there is a significant positive effect on the perceived service quality on the variable repurchase. Partially there is a positive no significant effect on the Customer Value variable on the Repurchase variable. Simultaneously there is an effect of perceived service quality variables and Customer Value variables on Repurchase variables because in the F-count analysis> F-table. Based on the gender of female passengers on Busway trends. Marital status tends to be single. Age is predominantly between the ages of 20 and 30 years. Education level of most high schools. The most dominant jobs are private employees and the average passenger uses Transjakarta to work. The study uses descriptive associative method aims to determine the relationship between two or more variables.

Penelitian dilakukan terhadap busway Transjakarta. Tujuan penelitian menganalisis dan mengetahui pengaruh variabel Kualitas Layanan yang dirasakan dan variabel Nilai Pelanggan terhadap variabel Pembelian Ulang. Hasil penelitian secara parsial terdapat pengaruh signifikan positif variabel Kualitas Layanan yang dirasakan terhadap variabel Pembelian Ulang. Secara parsial terdapat pengaruh tidak signifikan positif  variabel Nilai Pelanggan terhadap variabel Pembelian Ulang. Secara simultan terdapat pengaruh variabel Kualitas Layanan yang dirasakan dan variabel Nilai Pelanggan terhadap variabel Pembelian Ulang karena dalam analisis F-hitung > F-tabel. Berdasarkan jenis kelamin kecenderungan penumpang adalah perempuan. Status perkawinan kecenderungan berstatus single. Usia didominasi berusia antara 20 sampai dengan 30 tahun. Tingkat pendidikan sebagian besar SMU. Pekerjaan paling dominan karyawan swasta dan rata-rata penumpang menggunakan Transjakarta untuk bekerja. Penelitian menggunakan metode deskriptif asosiatif  bertujuan untuk mengetahui hubungan antara dua variabel atau lebih.
PENGARUH FAKTOR FUNDAMENTAL PERUSAHAAN TERHADAP RETURN SAHAM
Authors: Purnama Egis Tubagus , Asnawi Said Kelana , Puji Lestari Etty
Published: April 2020

This research is conducted to analyze the influence of fundamental factor of company to stock return on coal mining sector which listed in Indonesia Stock Exchange in year 2014-2016. Fundamental factors are represented by CR, MP/TA, FA/TA, DER and ROA. The object of this research is the coal mining sector companies listed on the Indonesia Stock Exchange which submits the financial statements during the period 2014-2016. The sample of this research consists of 11 companies and 33 observations. Statistical methods used in this research is multiple regression analysis.The results of this research indicate that FA/TA and ROA affect stock return on coal mining sector which listed in Indonesia Stock Exchange in year 2014-2016, while CR, MP/TA, and DER  do not affect to stock return on coal mining sector which listed in Indonesia Stock Exchange in year 2014-2016.

Penelitian ini dilakukan untuk menganalisis pengaruh faktor fundamental perusahaan terhadap return saham pada sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia pada tahun 2014-2016. Faktor fundamental di wakili oleh CR, MP/TA, FA/TA, DER dan ROA. Obyek penelitian ini adalah perusahaan yang termasuk di dalam sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia yang menyampaikan laporan keuangan sepanjangperiode tahun 2014-2016. Sampel penelitian ini terdiri dari 11 perusahaandengan jumlah pengamatan sebanyak 33 pengamatan. Metode statistik yang di gunakan dalam penelitian ini adalah analisa regresi berganda. Hasil penelitian ini menunjukan bahwa FA/TA dan ROAmemberikan pengaruh teradap return saham pada sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia pada tahun 2014-2016, sedangkan CR, MP/TA dan DER tidak memberikan pengaruh terhadap return saham pada sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia pada tahun 2014-2016.
MANAJEMEN KUALITAS PELAYANAN TRANSPORTASI LAUT DALAM MENINGKATKAN KEPUASAN PELANGGAN PADA JASA BONGKAR MUAT
Authors: Mulatsih Retno , Wahyudi Edi , Sumantri Andar Sri
Published: April 2020

This research is intended to explore the factors that influence customer satisfaction from loading and unloading services at PT. Pelindo III (Persero) Tanjung Emas Branch Semarang, Indonesia. This study has analyzed the factors of speed of stevedoring services, loading/unloading facilities/equipment, and empathy and its effect on customer satisfaction The respondents of this study were 80 customer companies consisting of Shipping Company, Shipload Expedition (EMKL)/PPJK, Freight Forwarding, and Loading and Unloading Company (PBM) operating in the Central Java and surrounding areas. The findings of the study with multiple linear regression analysis and hypothesis test, showed that there was a positive and significant influence on the variable loading and unloading service on customer satisfaction, loading/unloading facilities/equipment factors of satisfaction customers, as well as employee care (emphaty) on customer satisfaction.

Penelitian ini dimaksudkan untuk menggali faktor-faktor yang mempengaruhi kepuasan pelanggan jasa bongkar muat pada PT. Pelindo III (Persero) Cabang Tanjung Emas Semarang, Indonesia. Penelitian ini menganalisis faktor kecepatan pelayanan bongkar muat, fasilitas/peralatan bongkar muat, dan empati serta pengaruhnya terhadap kepuasan pelanggan. Responden penelitian ini sebanyak 80 perusahaan pelanggan yang terdiri dari Perusahaan Pelayaran (Shipping Company), Ekspedisi Muatan Kapal Laut (EMKL)/PPJK, Freight Forwarding. Teknik sampling yang digunakan yaitu teknik random sampling, dalam melakukan analisis data dengan regresi linier berganda. Temuan penelitian dengan analisis regresi linear berganda dengan uji hipotesis menunjukkan bahwa terdapat pengaruh positif dan signifikan antara variabel kecepatan pelayanan bongkar muat terhadap kepuasan pelanggan, faktor fasilitas/peralatan bongkar muat terhadap kepuasan pelanggan, serta kepedulian petugas (emphaty) terhadap kepuasan pelanggan.
The Effect of Disrupting Changes on Senior Lecturers Performance
Authors: Prayitno Prayitno , Sutrisno  , Jalil Mahben
Published: April 2020

Rapid external changes without being followed by internal changes will have a negative impact on tertiary institutions. Internal change begins with the ability of senior lecturers because they are at the forefront in following changes. Organizational commitment is evidenced by the high quality of the lecturers’ work ability. This study utilized combined research methods or exploratory mix methods with data taken from forlap dikti and Sinta, and quantitative and qualitative analysis using WAI (Work Ability Index). Results of the study showed that the work ability of senior lecturers is lacking (0.1-1), while organizational commitment is still low as evidenced by the results of scientific journals during the past three years. The innovation of this study is the Emotional Work Community (EWC) as a concept model to improve lecturers' performance abilities that are lacking.
Global trends in apps for agriculture
Authors: Barbosa Julierme Zimmer , Prior Stephen A. , Pedreira Guilherme Quaresma , Motta Antonio Carlos Vargas , Poggere Giovana Clarice , Goularte Gabriel Democh
Published: April 2020

Although applications (apps) for mobile devices show increasing popularity in the agricultural sector, studies regarding their availability are still incipient. In the present study, a survey was conducted to assess global trends of app availability for agriculture. This survey was conducted in 2015 and 2018 in two app stores with free access (Google Play and Windows Phone); searches for the following keywords were included in the survey: agriculture, agri, and farming. In 2015 and 2018, these searches found 244 and 599 apps from 33 and 61 countries, respectively. Countries with the largest number of apps (i.e., USA, Brazil, and India) accounted for ~64% of all surveyed apps. However, diversity and availability of paid apps was greater in USA and Brazil compared to India. Although many apps were related to magazines and market information, numerous other apps were available on farm management, pests and diseases, precision agriculture, and technical assistance. Related apps that used photographic input and citizen science data were also found. Our study indicates that the global development of apps for agriculture is growing rapidly, with most serving informative purposes at no cost to users.
Phosphorus Fertilizers From Sewage Sludge Ash and Animal Blood Have No Effect on Earthworms
Authors: Jastrzębska Magdalena , Kostrzewska Marta K. , Treder Kinga
Published: April 2020

Soil invertebrates are crucial for agroecosystem functioning yet sensitive to agricultural practices, including fertilization. Considering the postulates of circular phosphorus economy, the use of fertilizers from secondary raw materials is likely to return and increase and may even become obligatory. The effects of recycled fertilizers on soil fauna communities, however, remain poorly understood. In this paper, the effect of phosphorus fertilizer (RecF) and biofertilizer (RecB) from sewage sludge ash and dried animal (porcine) blood on earthworm’s occurrence in soil is discussed. RecB is RecF activated by phosphorus-solubilizing bacteria, Bacillus megaterium. Waste-based fertilizers were assessed in field experiments against commercial superphosphate and no P fertilization. Three levels of P doses were established (17.6, 26.4, and 35.2 kg P ha−1). Earthworms were collected after the test crop harvest (spring or winter wheat). In the experiments two earthworm species, Aporrectodea caliginosa and Aporrectodea rosea, were identified. A large proportion of juvenile individuals were recorded in 2017. The recycled fertilizers used in the experiments used in recommended doses, similarly to superphosphate, did not alter the density, biomass, species composition, and structure of earthworms. Further long-term field research is recommended.
Tolerance and Persister Formation in Oral Streptococci
Authors: Suppiger Stephanie , Astasov-Frauenhoffer Monika , Schweizer Irene , Waltimo Tuomas , Kulik Eva M.
Published: April 2020

The aim of this study was to analyze the potential influence of long-term exposure in subinhibitory concentrations of chlorhexidine on the emergence of tolerant and/or persistent cells in oral streptococci. The two oral streptococcal isolates S. mutans ATCC25175 and S. sobrinus ATCC33402 were incubated, after long-term subinhibitory exposure to chlorhexidine, in liquid growth media containing high concentrations of chlorhexidine. A distinct subpopulation of more chlorhexidine-tolerant cells could be detected in streptococci that had been previously exposed to subinhibitory concentrations of chlorhexidine but not in the control strains. These more biocide-tolerant and persisting microbial subpopulations might also arise in vivo. Therefore, the rational and proper use of antimicrobials in dentistry, especially when used over a long period of time, is crucial.
Implementation of Fault-Tolerant Control for a Robot Manipulator Based on Synchronous Sliding Mode Control
Authors: Le Quang Dan , Kang Hee-Jun
Published: April 2020

In this paper, an active fault-tolerant control for a robot manipulator based on synchronous sliding mode is proposed. As the synchronization errors approach zero, the joint errors tend to become equal and also approach zero. Therefore, the synchronization technique is inherently effective for a fault-tolerant controller. To demonstrate such a system, the following implementation is presented. First, an estimator was designed with an extended state observer to estimate uncertainties/disturbances along with faults/failures. The estimator signal was used for an online compensator in the controller. A fault-tolerant controller with a combination of synchronous sliding mode technique and estimator was proposed. The stability of the system was established using Lyapunov theory. Finally, fault tolerant control was implemented in a three degree-of-freedom robot manipulator and compared to the conventional sliding mode control. This comparison shows the effectiveness of the proposed active fault-tolerant control with synchronous sliding mode technique.
Serial Disulfide Polymers as Cathode Materials in Lithium-Sulfur Battery: Materials Optimization and Electrochemical Characterization
Authors: Wang Jing , Zhang Shichao
Published: April 2020

Herein, a series of novel disulfide polymers were synthesized by using the raw materials of diallyl-o-phthalate, tung oil, peanut oil, and styrene. Four kinds of products: Poly (sulfur-diallyl-o-phthalate) copolymer, poly (sulfur-tung oil) copolymer, poly (sulfur-peanut oil) copolymer, and poly (sulfur-styrene-peanut oil) terpolymer were characterized, and their solubility was studied and compared. Among the four kinds of disulfide polymers, poly (sulfur-styrene-peanut oil) terpolymer had the best solubility in an organic solvent, and it was chosen to be the active cathode material in Li-S battery. Subsequently, two different conductive additives—conductive carbon black and graphene were separately blended with this terpolymer to prepare two battery systems. The electrochemical performances of the two batteries were compared and analyzed. The result showed that the initial specific capacity of poly (sulfur-styrene-peanut oil) terpolymer (blended with conductive carbon black) battery was 935.88 mAh/g, with the capacity retention rate about 43.5%. Comparingly, the initial specific capacity of poly (sulfur-styrene-peanut oil) terpolymer (blended with graphene) battery was 1008.35 mAh/g, with the capacity retention rate around 60.59%. Therefore, the battery system of poly (sulfur-styrene-peanut oil) terpolymer with graphene showed a more stable cycle performance and better rate performance. This optimized system had a simple and environmental-friendly synthesis procedure, which showed a great application value in constructing cathode materials for the Li-S battery.
Transient Study of Flow and Cavitation Inside a Bileaflet Mechanical Heart Valve
Authors: Li Wen-qing , Gao Zhi-xin , Jin Zhi-jiang , Qian Jin-yuan
Published: April 2020

A mechanical heart valve (MHV) is an effective device to cure heart disease, which has the advantage of long life and high reliability. Due to the hemodynamic characteristics of blood, mechanical heart valves can lead to potential complications such as hemolysis, which have damage to the blood elements and thrombosis. In this paper, flowing features of the blood in the valve are analyzed and the cavitation mechanism in bileaflet mechanical heart valve (BMHV) is studied. Results show that the water hammer effect and the high-speed leakage flow effect are the primary causes of the cavitation in the valve. Compared with the high-speed leakage flow effect, the water hammer has a greater effect on the cavitation strength. The valve goes through four kinds of working condition within one heart beating period, including, fully opening stage, closing stage and fully closing stage. These four stages, respectively, make up 8.5%, 16.1%, 4.7% and 70.7% of the total period. The cavitation occurs on the fully closing stage. When the valve is in closing stage, the high pressure downstream of the valve lasts for about 20 ms and the high-speed leakage flow lasts for about 200 ms. This study systematically analyzes the causes of cavitation emerged in the process of periodic motion, which proposes the method for characterizing the intensity of the cavitation, and can be referred to for the cavitation suppression of the BHMV and similar valves.
Identifying NOx Hotspots in Transient Urban Driving of Two Diesel Buses and a Diesel Car
Authors: Leach Felix C. P. , Peckham Mark S. , Hammond Matthew J.
Published: April 2020

NOx emissions from vehicles have been a substantial cause for concern due to their impact on urban air quality. In particular, despite reducing levels of permitted emissions legislatively, such reductions have not been observed in the real world. In this work, NOx emissions from three vehicles—a Euro 5 car, a Euro V hybrid bus, and a Euro VI—bus have been measured in real driving conditions (and in the case of the buses—in full passenger service). A recently developed high spatio-temporal resolution technique combining very fast (10 ms) NOx measurement with differential GPS accurate to 1 cm allows these emissions to be resolved to a distance of less than 10 cm (worst-case—dependent on vehicle speed). The results show that acceleration events for the vehicles play a significant part in their total NOx emissions. In addition, standard events such as a speed bump and a bus stop are analysed. The temperature of any aftertreatment (catalytic converter) to reduce NOx emissions is also observed to be of substantial significance. At idle, the passenger car was observed to near-double its NOx emissions when the air conditioning was switched on. Finally, the real driving conditions are compared to the legislative compliance cycles for the certification of the buses, and those results used to further understand the observed NOx emissions.
Variability of BVOC Emissions from Commercially Used Willow (Salix spp.) Varieties
Authors: Karlsson Tomas , Rinnan Riikka , Holst Thomas
Published: April 2020

Willow (Salix spp.) trees are commonly used in short rotation coppices (SRC) to produce renewable energy. However, these plants are also known to emit high concentrations of biogenic volatile organic compounds (BVOCs), which have a large influence on air quality. Many different clones of commercially used Salix varieties exist today, but only a few studies have focused on BVOC emissions from these newer varieties. In this study, four varieties commercially propagated for biofuel production have been studied on a leaf-scale in the southern part of Sweden. The trees had either their first or second growing season, and measurements on BVOC emissions were done during the growing season in 2017 from the end of May to the beginning of September. Isoprene was the dominant emitted compound for all varieties but the average emission amongst varieties varied from 4.00 to 12.66 µg gdw−1 h−1. Average monoterpene (MT) (0.78–1.87 µg gdw−1 h−1) and sesquiterpene (SQT) emission rates (0.22–0.57 µg gdw−1 h−1) differed as well among the varieties. Besides isoprene, other compounds like ocimene, linalool and caryophyllene also showed a response to light but not for all varieties. Younger plants had several times higher emissions of non-isoprenoids (other VOCs) than the corresponding 1-year-old trees. The conclusions from this study show that the choice of variety can have a large impact on the regional BVOC emission budget. Genetics, together with stand age, should be taken into account when modelling BVOC emissions on a regional scale, for example, for air quality assessments.
The Efficacy of Sunitinib Treatment of Renal Cancer Cells Is Associated with the Protein PHAX In Vitro
Authors: Al-Lamki Rafia S. , Hudson Nicholas J. , Bradley John R. , Warren Anne Y. , Eisen Tim , Welsh Sarah J. , Riddick Antony C. P. , O’Mahony Fiach C. , Turnbull Arran , Powles Thomas ,   SCOTRRCC Collaborative, Reverter Antonio , Harrison David J. , Stewart Grant D.
Published: April 2020

Anti-angiogenic agents, such as the multi-tyrosine kinase inhibitor sunitinib, are key first line therapies for metastatic clear cell renal cell carcinoma (ccRCC), but their mechanism of action is not fully understood. Here, we take steps towards validating a computational prediction based on differential transcriptome network analysis that phosphorylated adapter RNA export protein (PHAX) is associated with sunitinib drug treatment. The regulatory impact factor differential network algorithm run on patient tissue samples suggests PHAX is likely an important regulator through changes in genome-wide network connectivity. Immunofluorescence staining of patient tumours showed strong localisation of PHAX to the microvasculature consistent with the anti-angiogenic effect of sunitinib. In normal kidney tissue, PHAX protein abundance was low but increased with tumour grade (G1 vs. G3/4; p < 0.01), consistent with a possible role in cancer progression. In organ culture, ccRCC cells had higher levels of PHAX protein expression than normal kidney cells, and sunitinib increased PHAX protein expression in a dose dependent manner (untreated vs. 100 µM; p < 0.05). PHAX knockdown in a ccRCC organ culture model impacted the ability of sunitinib to cause cancer cell death (p < 0.0001 untreated vs. treated), suggesting a role for PHAX in mediating the efficacy of sunitinib.
Phytoestrogen Agathisflavone Ameliorates Neuroinflammation-Induced by LPS and IL-1β and Protects Neurons in Cocultures of Glia/Neurons
Authors: de Almeida Monique Marylin Alves , Souza Cleide dos Santos , Dourado Naiara Silva , da Silva Alessandra Bispo , Ferreira Rafael Short , David Jorge Mauricio , David Juceni Pereira , Costa Maria de Fátima Dias , da Silva Victor Diógenes Amaral , Butt Arthur Morgan , Costa Silvia Lima
Published: April 2020

Inflammation and oxidative stress are common aspects of most neurodegenerative diseases in the central nervous system. In this context, microglia and astrocytes are central to mediating the balance between neuroprotective and neurodestructive mechanisms. Flavonoids have potent anti-inflammatory and antioxidant properties. Here, we have examined the anti-inflammatory and neuroprotective potential of the flavonoid agathisflavone (FAB), which is derived from the Brazilian plant Poincianella pyramidalis, in in vitro models of neuroinflammation. Cocultures of neurons/glial cells were exposed to lipopolysaccharide (LPS, 1 µg/mL) or interleukin (IL)-1β (10 ng/mL) for 24 h and treated with FAB (0.1 and 1 µM, 24 h). FAB displayed a significant neuroprotective effect, as measured by nitric oxide (NO) production, Fluoro-Jade B (FJ-B) staining, and immunocytochemistry (ICC) for the neuronal marker β-tubulin and the cell death marker caspase-3, preserving neuronal soma and increasing neurite outgrowth. FAB significantly decreased the LPS-induced microglial proliferation, identified by ICC for Iba-1/bromodeoxyuridine (BrdU) and CD68 (microglia M1 profile marker). In contrast, FAB had no apparent effect on astrocytes, as determined by ICC for glial fibrillary acidic protein (GFAP). Furthermore, FAB protected against the cytodestructive and proinflammatory effects of IL-1β, a key cytokine that is released by activated microglia and astrocytes, and ICC showed that combined treatment of FAB with α and β estrogen receptor antagonists did not affect NF-κB expression. In addition, qPCR analysis demonstrated that FAB decreased the expression of proinflammatory molecules TNF-α, IL-1β, and connexins CCL5 and CCL2, as well as increased the expression of the regulatory molecule IL-10. Together, these findings indicate that FAB has a significant neuroprotective and anti-inflammatory effect in vitro, which may be considered as an adjuvant for the treatment of neurodegenerative diseases.
Efficacy and Safety of Melatonin Treatment in Children with Autism Spectrum Disorder and Attention-Deficit/Hyperactivity Disorder—A Review of the Literature
Authors: Rzepka-Migut Beata , Paprocka Justyna
Published: April 2020

Autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) are neurodevelopmental disorders with disturbed melatonin secretion profile and sleep problems. The growing incidence of ASD and ADHD inspires scientists to research the underlying causes of these conditions. The authors focused on two fundamental aspects, the first one being the presentation of the role of melatonin in ASD and ADHD and the second of the influence of melatonin treatment on sleep disorders. The authors present the use of melatonin both in the context of causal and symptomatic treatment and discuss melatonin supplementation: Dosage patterns, effectiveness, and safety. Sleep disorders may have a different clinical picture, so the assessment of exogenous melatonin efficacy should also refer to a specific group of symptoms. The review draws attention to the wide range of doses of melatonin used in supplementation and the need to introduce unified standards especially in the group of pediatric patients.
Inflammation and Trauma-Related Psychopathology in Syrian and Iraqi Refugees
Authors: Grasser Lana Ruvolo , Burghardt Paul , Daugherty Ana M , Amirsadri Alireza , Javanbakht Arash
Published: April 2020

Refugees experience high rates of post-traumatic stress disorder (PTSD), anxiety, and depression due to exposure to civilian war trauma and forced migration. Inflammatory products may offer viable biological indicators of trauma-related psychopathology in this cohort, promoting rapid and objective assessment of psychopathology. Incoming Syrian and Iraqi refugees (n = 36) ages 18–65 completed self-report measures of PTSD, anxiety, and depression and provided saliva samples during an assessment at a primary care clinic within the first month of resettlement in the United States. Interleukin 1β (IL-1β) and C-reactive protein (CRP) differentially correlated with symptom severity by domain, and there was a non-significant trend for sex moderating the relation between inflammation and PTSD symptoms. Our findings show unique relations between trauma-related psychopathology and inflammation. There is a need for further research in diverse ethnic cohorts with differential trauma exposures for inflammation to be considered a biological indicator of psychopathology.
The Receptor Tyrosine Kinase RON and Its Isoforms as Therapeutic Targets in Ewing Sarcoma
Authors: Berning Philipp , Hennemann Carolin , Tulotta Claudia , Schaefer Christiane , Lechtape Birgit , Hotfilder Marc , El Gourari Yassmine , Jürgens Heribert , Snaar-Jagalska Ewa , Hempel Georg , Dirksen Uta , Potratz Jenny
Published: April 2020

The receptor tyrosine kinase (RTK) RON is linked to an aggressive metastatic phenotype of carcinomas. While gaining interest as a therapeutic target, RON remains unstudied in sarcomas. In Ewing sarcoma, we identified RON among RTKs conferring resistance to insulin-like growth factor-1 receptor (IGF1R) targeting. Therefore, we explored RON in pediatric sarcoma cell lines and an embryonic Tg(kdrl:mCherry) zebrafish model, using an shRNA-based approach. To examine RON–IGF1R crosstalk, we employed the clinical-grade monoclonal antibody IMC-RON8, alone and together with the IGF1R-antibody IMC-A12. RON silencing demonstrated functions in vitro and in vivo, particularly within micrometastatic cellular capacities. Signaling studies revealed a unidirectional IGF1-mediated cross-activation of RON. Yet, IMC-A12 failed to sensitize cells to IMC-RON8, suggesting additional mechanisms of RON activation. Here, RT-PCR revealed that childhood sarcomas express short-form RON, an isoform resistant to antibody-mediated targeting. Interestingly, in contrast to carcinomas, treatment with DNA methyltransferase inhibitor did not diminish but increased short-form RON expression. Thus, this first report supports a role for RON in the metastatic progression of Ewing sarcoma. While principal molecular functions appear transferrable between carcinomas, Ewing sarcoma and possibly more common sarcoma subtypes, RON highlights that specific regulations of cellular networks and isoforms require better understanding to successfully transfer targeting strategies.