bluuebunny/crossref_metadata_2025 huggingface dataset:
Geopolitical Discrimination of Some Countries as Exemplified by Ukraine: Difficulties and Perspectives
Authors: Bohomolets Olha
Published: March 2020

The article studies the history and the current stage of Russia’s aggression to-wards countries with lower military potential. The collapse of the post-war system of international relations and collective security has become apparent: the aggression of Russia against Moldova, Georgia and Ukraine has testified to the fact that there are no longer any tools to protect countries subjected to discrimination from super powers.
Today discrimination affects not only people or social groups, but also some countries.
Such countries are not capable of pursuing an independent policy as to major centres of international power they have to deal with. Peculiar to these countries are uncompetitive economy, low quality of life and undeveloped civil society, they hence become a target for “vital interests”, namely bidding by so-called super powers.
“Giants” are attracted by the geographical location of a possible “victim”, access to the sea, transit facilities, natural resources, especially energy, low-cost labour, etc. It is often that “discriminated” countries become grounds for ignition of burning or frozen conflicts provoked by powerful neighbours’ influence, or are exposed to open aggression and become subject to occupation or hybrid war.
This has all started after the Second World War, when super powers of the USSR and China, on the one hand, and the United States, Great Britain, Australia, and others, on the other, have made Korea fall into two states. In addition, there was subsequently a division of Germany, the Caribbean crisis…However, such conflicts then were not that wide-ranging, since the post-war collective security system was quite effective.
Things, though, have changed dramatically in recent decades. One of the largest global players − Russia – has decisively begun to create around itself a buffer zone formed of countries, where it fuels frozen conflicts and in such a way keeps them under the radar and hinders their integration into the Western world.
Initially, Russia ignited a conflict in Nagorno-Karabakh, supporting Armenia and assisting it to invade a considerable part of the territory in Azerbaijan, and then initiated the war in Transnistria by virtually occupying part of Moldova’s territory and asserting itself there on the pretext of deploying a peacekeeping mission. Later, there was a war in Abkhazia and then − in South Ossetia aiming to detach part of Georgia’s territory. And lastly, the turn of Ukraine has come… Regrettably, Ukraine is a typical and another example of a country that has fallen victim of multifaceted interests of the leading global players − Russia, the United States and the EU, and has faced all possible forms of discrimination.
Keywords: war in eastern Ukraine, military aggression, geopolitics, conflicts, buffer zones.
Hungarians in Kyiv. Leading figures of history of Hungarian-Ukrainian relations from 9th century to present day
Authors: Vidnianskyi Stepan
Published: March 2020

In this review, the author sheds light on the content and concept of the publication entitled Hungarians in Kyiv. Historical Chapters of Hungarian-Ukrainian Relations from the 9th Century to the Present by Stefan-Arpad Madiar. In 2005, in the course of an international scientific conference ‘Ukraine-Hungary: Common Past and Present’ at the Institute of History of Ukraine of the NAS of Ukraine, the main issues and challenges of the history of relations between Ukraine and Hungary were discussed. The participants of the conference concluded an agreement on the establishment of the commission of historians to strengthen scientific cooperation. The review notes that Ukrainian and Hungarian historians should carry on a permanent dialogue on disputable matters related to the historical past of the two nations for obtaining objective knowledge about the relations between Hungary and Ukraine at different historical junctures.
The book Hungarians in Kyiv. Historical Chapters of Hungarian-Ukrainian Relations from the 9th Century to the Present is considered as a joint artistic achievement of cooperation among Ukrainian and Hungarian historians. The review also mentions certain aspects of the past relations between Ukraine and Hungary, and the life of Stefan-Arpad Madiar, the main initiator, author, and layout director of the publication. The author stresses that it was Stefan-Arpad Madiar who managed to work on the book structure, select original illustrations, exclusive documentary materials, engage famous scholars and historians to the creation of the book, etc.
The book consists of 23 problematically and chronologically arranged chapters and offers a glimpse of unique periods in the history of relations between Ukraine and Hungary, activities of Hungarian diplomatic missions in Kyiv and Ukrainian missions in Budapest, and contains information about Hungarian prisoners of war in post-war Kyiv based on memoirs and archival documents. The author is fully confident that this book will give its readers new knowledge about the history of relations between Ukraine and Hungary, thus facilitating the sense of a more profound understanding between the two nations.
Key words: relations between Ukraine and Hungary, scientific conference, publication Hungarians in Kyiv. Historical Chapters of Hungarian-Ukrainian Relations from the 9th Century to the Present, Embassy of Hungary in Ukraine, cooperation between Ukraine and Hungary.
REPRODUÇÃO DE ALGUMAS ESPÉCIES DE FITONEMATÓIDES EM NIGER (Guizotia abyssinica)
Authors: Rossi Carlos Eduardo , Ferraz Luiz Carlos Camargo Barbosa
Published: March 2020

REPRODUÇÃO DE ALGUMAS ESPÉCIES DE FITONEMATÓIDES EM NIGER (Guizotia abyssinica)
ESCÓRIA DE SIDERURGIA E CALCÁRIO NA TAXA DE FOLHAS SENESCENTES DA CULTURA DA CANA-DE-AÇUCAR
Authors: Prado Renato De Mello , Fernandes Francisco Maximino
Published: March 2020

ESCÓRIA DE SIDERURGIA E CALCÁRIO NA TAXA DE FOLHAS SENESCENTES DA CULTURA DA CANA-DE-AÇUCAR
ALIMENTOS TRANSGÊNICOS: RISCOS E QUESTÕES ÉTICAS
Authors: Garcia Maria Alice
Published: March 2020

ALIMENTOS TRANSGÊNICOS: RISCOS E QUESTÕES ÉTICAS
MANIPUEIRA EM PÓ: ESTUDO PIONEIRO SOBRE SUA AÇÃO COMO FUNGICIDA E FERTILIZANTE FOLIAR
Authors: Góes Erbene , Ponte J. Júlio da
Published: March 2020

MANIPUEIRA EM PÓ: ESTUDO PIONEIRO SOBRE SUA AÇÃO COMO FUNGICIDA E FERTILIZANTE FOLIAR
CONTROLE QUÍMICO DO TOMBAMENTO CAUSADO POR Pythium aphanidermatum EM PLÂNTULAS DE MELÃO, PEPINO, REPOLHO E TOMATE
Authors: Patricio Flávia R. A. , Lopes Maria Elizabeth B. M. , Malavolta Vanda M. A. , Sinigaglia Celso , Peterossi Jr. Nelson
Published: March 2020

CONTROLE QUÍMICO DO TOMBAMENTO CAUSADO POR Pythium aphanidermatum EM PLÂNTULAS DE MELÃO, PEPINO, REPOLHO E TOMATE
TRANSGÊNICOS, MITOS E FATOS
Authors: Paterniani Ernesto
Published: March 2020

TRANSGÊNICOS, MITOS E FATOS
RESPOSTA DE DOIS CULTIVARES DE ARROZ AO ZINCO EM SOLUÇÃO NUTRITIVA
Authors: Malavolta Eurípides , Heinrichs Reges , Cabral Cleusa Pereira , Oliveira Simone Cristina de , Szakacs Gabor , Andrade Netto José Fernandes de , Almeida Raul Santin de , Souza Wilson J. O. , Malavolta Marcelo
Published: March 2020

RESPOSTA DE DOIS CULTIVARES DE ARROZ AO ZINCO EM SOLUÇÃO NUTRITIVA
DANOS E CONTROLE DO BICUDO NA PRODUÇÃO DE ALGODÃO EM CAROÇO
Authors: Scarpellini José Roberto , Santos José Carlos C. , Pretto Denis
Published: March 2020

DANOS E CONTROLE DO BICUDO NA PRODUÇÃO DE ALGODÃO EM CAROÇO
RESISTÊNCIA DE GENÓTIPOS DE MILHO PIPOCA A DOENÇAS
Authors: Fantin Gisèle Maria , Dudienas Christina , Castro Jairo Lopes de , Sordi Guido De
Published: March 2020

RESISTÊNCIA DE GENÓTIPOS DE MILHO PIPOCA A DOENÇAS
INTERAÇÃO CALCÁRIO X ZINCO SOBRE A PRODUÇÃO DE MATÉRIA SECA E ABSORÇÃO DE NUTRIENTES PELO MILHO
Authors: Andreotti Marcelo , Crusciol Carlos Alexandre Costa
Published: March 2020

INTERAÇÃO CALCÁRIO X ZINCO SOBRE A PRODUÇÃO DE MATÉRIA SECA E ABSORÇÃO DE NUTRIENTES PELO MILHO
STUDI TEORITIS: STRUKTUR DAN SIFAT POLIFURAN TERSUBSTITUSI SEBAGAI SEMIKONDUKTOR DENGAN MENGGUNAKAN PROGRAM PM3
Authors: - Lazulva
Published: March 2020

Telah dilakukan penelitian untuk mempelajari struktur dan sifat elektronik dari polimer furan dan turunannya (disubstitusi) dengan jumlah cincin furan n = 20 dengan menggunakan program PM3. Substituen yang digunakan dalam penelitian ini berupa atom atau molekul radikal pada posisi ujung. Subtituen yang dipelajari adalah fenil (Ph), radikal heksahalobenzena (-Z), radikal pirol (Py) dan tiofen (T).. Masukan data awal furan adalah sudut ikatan awal untuk C=C-C = 105˚, C=C-H = 120˚, H-C-C = 135˚, H-C-O = 123.872˚, O-C=C = 116˚, torsion angle = 0˚ dan panjang ikatan C=C, C-C = 1,4 Å, C-O = 1,408 Å dan C-H = 1 Å. Dalam penelitian ini digunakan komputasi secara RHF ( Restrical Hartree Fock) dengan pengoptimasi Polak Ribiere. Optimasi dilakukan dengan ketentuan berikut: spin multiplicity = 1; charge = 0; convergence limit = 0,001; iterration limit = 50; dan gradien 0,01 kCal/mol.Å. Luaran data (dalam keadaan optimal) yang dibutuhkan adalah Binding Energy (BE adalah energi ikatan antar atom-atom dalam molekul), EHOMO ( tingkat energi highest occupied molecular orbital dan ELUMO (tingkat energi lowest occupied molecular orbital). Sifat penghantar polimer ditentukan dari nilai ΔE atau (Egap). Nilai Egap suatu konduktor, semikonduktor dan isolator berturut-turut adalah < 1,0 eV; 1,0 – 3,0 eV; dan > 3 eV. Hasil pengoptimasian struktur turunan polifuran memperlihatkan bahwa seluruh substituen yang digunakan dapat menurunkan nilai band gap (Egap) polifuran. Nilai band gap (Egap) ternyata dipengaruhi oleh jumlah cincin furan yang berikatan membentuk polimer. Penurunan nilai band gap yang signifikan terjadi pada jumlah monomer furan n = 1 s.d 10.
PEMANFAATAN KULIT UBI KAYU MENJADI KERUPUK DAN PENENTUAN KADAR NUTRIENNYA
Authors: - Yusbarina , Nst Rumondang Bulan , Alfian Zul
Published: March 2020

Industri rumah tangga keripik ubi kayu Sanjai di Medan bahan bakunya 10 ton perhari dan 30% dari bahan baku tersebut dibuang yaitu kulitnya. Penelitian ini bertujuan untuk mengetahui berapa kadar HCN dalam kulit ubi kayu, bagaimana cara mengolah kulit ubi kayu menjadi kerupuk, berapa kadar nutrien (karbohidrat, protein, lemak, air dan abu), serta hasil uji organoleptik kerupuk. Hasil penelitian menunjukkan kadar HCN kulit ubi kayu: 22,14 mg/kg. Hal ini menunjukkan bahwa kulit ubi kayu aman untuk diolah menjadi bahan makanan. Kerupuk dibuat dengan mengolah kulit ubi kayu dengan tepung tapioka dengan perbandingan 1:2. Kadar karbohidrat, protein, air, abu, dan lemak kerupuk secara berturut –turut yaitu 82,90; 1,10; 13,00; 2,09; dan 0,10%. Hasil uji organoleptik menunjukkan skala 3 (suka).
BIOAKTIVITAS EKSTRAK KULIT BATANG TUMBUHAN LANGKA MERANTI LILIN
Authors: Syahri Jufrizal , Rullah Kamal , Siregar Sri Hilma
Published: March 2020

Tumbuhan Shorea teysmaniana Dier adalah tumbuhan khas Provinsi Riau yang sudah langka dan dikenal dengan nama Meranti Lilin. Kulit batang tumbuhan ini diekstrak dengan metoda maserasi, sehingga didapatka ekstrak heksan 40,69 g, ekstrak etilasetat 133,22 g, dan ekstrak methanol 386,29 g. Masing-masing ekstrak dilakukan uji antibakteri dengan metoda difusi dan uji anti oksidan dengan metoda DPPH. Uji antibakteri dilakukan terhadap bakteri Escherichia coli, Staphylococcus aureus, Sallmonella typhii, Bacillus subtilis dengan konsentrasi 1%. Ekstrak heksana tidak menunjukkan aktivitas, ekstrak etilasetat memberikan zona bening berturut-turut (mm) 13,2; 12,3; 9,6; 9;9. Ekstrak metanol menunjukkan aktifitas dg membentuk zona bening berturut-turut (mm) 10,6; 10,3; 8,1; 11,0. Berdasarkan aktivitas inilah proses isolasi dilanjutkan dengan menggunakan kromatografi vacum cair sehingga dihasilkan 12 fraksi untuk setiap ekstraknya. Ekstrak aktif dilanjutkan untuk diisolasi sampai senyawa murni, untuk ekstrak etil asetat menghasilkan 2 senyawa murni dengan kode HT1 dan HT2.
PKM WARUNG GIZI KELUARGA UNTUK KESEHATAN IBU DAN BALITA
Authors: Wahyuntari Evi , Sri Wahtini  , Silvi Lailatul Mufida
Published: March 2020

Abstract

Nutrition of toddlers and pregnant women is still a major problem in Indonesia, especially the incidence of stunting, anemia and chronic malnutrition in pregnant women. The aim of this program is to help partners overcome nutritional problems by increasing public awareness of healthy living behavior through consumption of fruits and vegetables (Germas). The method for this program  is 1) training PKK cadres and Health Cadres on nutrition of mothers and toddlers (2) Initiating family nutrition gardens. Outputs achieved from this program (1) Availability of family nutrition stalls managed by PKK groups (2) Available cadres who are able to provide health promotion to their members (3) Available back sheets and leaflets as media for counseling cadres.

 

Key word: nutrition garden, cadres, toddlers, pregnant women

 

Abstrak

Gizi balita dan ibu hamil masih menjadi masalah besar di Indonesia terutama kejadian stuntuing pada balita, anemia dan KEK pada ibu hamil.  Tujuan dari program PKM ini adalah untuk membantu mitra mengatasi permasalahan gizi dengan meningkatkan kesadaran masyarakat berperilaku hidup sehat melalui konsumsi buah dan sayur (Germas). Metode pelaksanaan kegiatanadalah 1) pelatihan kader PKK dan Kader Kesehatan tentang gizi ibu dan balita (2) Menginisiasi kebun gizi keluarga. Luaran yang dicapai dari PKM ini (1) Tersedianya warung gizi keluarga yang dikelolo oleh kelompok PKK (2) Tersedia kader yang mampu memberikan promosi kesehatan pada anggotanya (3) Tersedia lembar balik dan leaflet sebagai media penyuluhan kader.

 

Kata Kunci: Kebun gizi, kader, balita, ibu hamil
ANALISIS BEBAN KERJA MENTAL KARYAWAN MENGGUNAKAN METODE NASA TLX (Studi Kasus: PT. Universal Tekno Reksajaya Pekanbaru, Riau)
Authors: Zen Zayyinul Hayati , Adrian Ardi
Published: March 2020

PT. Universal Tekno Reksajaya adalah sebuah perusahaan yang bergerak dibidang remanufacturing komponen-komponen alat berat di Indonesia. Tentunya ini berfungsi sebagai peremajaan komponen-komponen alat berat menjadi komponen yang dapat digunakan kembali dengan kualitas setara dengan produk baru. PT Universal Tekno Reksajaya merupakan salah satu anak perusahaan PT United Tractors Tbk. dengan lokasi plant pertama (dan kedua) yang dibangun pada saat itu adalah plant Pekanbaru dan Jakarta. Banyaknya jobs desk pekerjaan pada section General Over Houl (GOH) menimbulkan keluhan bagi pekerja terkait dengan tekanan kerja, jam kerja yang berlebihan, munculnya rasa bosan dan jenuh terhadap pekerjaan sehingga membuat produktivitas karyawan menjadi menurun. Maka dari itu di perlukan analisis beban kerja mental terhadap pekerja menggunakan metode NASA TLX. Setelah dilakukan analisis terhadap pekerja section General Over Houl (GOH) didapat hasil sangat tingginya beban kerja mental pekerja. Dengan itu perlunya rekomendasi terkait dengan penambahan SDM untuk membagi jobs desk yang begitu banyak agar lebih ringan, mengadakan sharing motivasi untuk mengembalikan semangat kerja karyawan dan kegiatan-kegiatan hiburan seperti ice breaking games dan sarana olah raga untuk mengembalikan kebugaran karyawan.
Curcuma caesia rhizomes: evaluation of antiasthmatic effect by using clonidine induced mast cell degranulation
Authors: Pathan Aslam , Sabu Mamiyil
Published: March 2020

Aim of study: Curcuma caesia (Family: Zingiberaceae) is being used in traditional medicine for the treatment of severe bronchitis and asthma. The aim of study was to evaluate antiasthmatic activity of various extracts of curcuma caesia rhizomes to validate its traditional use.
Materials and methods: In the present study petroleum ether, ethanol and water extract of Curcuma caesia rhizomes at the doses of 25-100 mg/kg i. p. was evaluated for antiasthmatic activity using clonidine induced mast cells degranulation in mice. Results: Treatment group of CCEE (Curcuma caesia rhizomes ethanol extract) exhibited significant mast cell stabilizing potential at all three doses (25, 50, 100 mg/kg i.p) 27.2±1.854, 23.4±1.166, 17.6±1.452 respectively as compared to control group. Percent protection offered by CCEE at all three doses was notably 75.13%, 76.07%, 81.70% and was of statistical significance as compared to CCPEE and CCWE.
Conclusion: It can be concluded that the ethanol extract of Curcuma caesia (CCEE) may be useful in management of asthma. Keywords: Curcuma caesia, asthma, mast cell degranulation
Evaluation of Antiasthmatic effect of Curcuma zedoaria rhizomes by using milk induced leukocytosis in mice
Authors: Pathan Aslam , Sabu Mamiyil
Published: March 2020

Aim of study: Curcuma zedoaria (Family: Zingiberaceae) is being used in traditional medicine for the treatment of severe bronchitis and asthma. The aim of study was to evaluate antiasthmatic activity of various extracts of curcuma zedoaria rhizomes to validate its traditional use.
Materials and methods: In the present study petroleum ether, ethanol and water extract of Curcuma zedoaria rhizomes at the doses of 25, 50 and 100 mg/kg i. p. was evaluated for antiasthmatic activity using milk induced leukocytosis in mice.
Results: The results of present investigation showed that the ethanol extract of Curcuma zedoaria rhizomes at (100 mg/kg, i. p.) significantly decreases milk induced leukocytosis (1840±104.56) in mice in a dose dependent manner as compared to petroleum ether and water extracts and control group.
Conclusion: It can be concluded that the ethanol extract of Curcuma zedoaria (CZEE) may be useful in the management of asthma.
PENGARUH INTERVENSI BUAH JAMBU BIJI TERHADAP KADAR KOLETEROL TOTAL PADA ORANG DEWASA DISLIPIDEMIA KOTA KENDARI
Authors: Asmarani Asmarani , Indriyani N Nina , Rhenislawaty Rhenislawaty
Published: March 2020

AbstractPergeseran pola penyakit di masyarakat yang semula didominasi penyakit menular dan infeksi, saat ini telahberalih ke penyakit degeneratif, misalnya dislipidemia yang merupakan salah satu faktor risiko terjadinyapenyakit jantung koroner. Pola makan masyarakat yang tinggi lemak dan kolesterol dapat menyebabkandislipidemia. Buah yang mengandung serat larut air (pektin), dan vitamin C yang tinggi seperti jambu biji dapatdigunakan sebagai bahan intervensi hiperkolesterolemik. Penelitian ini bertujuan Mengetahui pengaruh jambubiji (psidium Guajava) terhadap kolesterol total pada dewasa dislipidemia Kota Kendari. Jenis dan desainpenelitian quasi eksperimental. Pada kelompok intervensi diberikan jus jambu biji dan olahraga dan kelompokkontrol berupa olahraga. Subyek mengkonsumsi jambu biji dengan dosis 400 mg, sekali sehari dengan volumetiap pemberian 250 ml yang dilakukan selama 30 hari. Sebelum diberikan intervensi tersebut subyek akandiambil darahnya untuk pemeriksaan koleterol total. Jumlah subyek untuk masing-masing kelompok sebesar33 orang (1:1). Data penelitian yang diambil berupa pengamatan jumlah level lipid darah (mg/dl) yaitukolesterol total (TC) dengan menggunaka metode pemeriksaan standar. Data dianalisis menggunakan ujikorelasi paired t test. Hasil pada penelitian menunjukkan setelah 4 minggu perlakuan, pemberian jambu bijimenurunkan kolesterol total yang signifikan pada kelompok intervensi dibandingkan dengan kelompok kontrol(p<0,05). Kesimpulan penelitian ini Pemberian jus jambu biji terbukti mampu menurunkan kolesterol total.Kata Kunci: jambu biji (Psidium guajava); kolesterol total; dislipidemia
PEMETAAN PERILAKU BERISIKO GAY BERBASIS SNA SEBAGAI EARLY WARNING SYSTEM KASUS HIV/AIDS DI KOTA KENDARI
Authors: Gerung Jumartin
Published: March 2020

AbstrakPada kasus HIV dalam skala nasional, menunjukkan bahwa kelompok heteroseks juga termasuk sebagai kelompokutama yang paling berisiko menderita HIV/AIDS. Peningkatan ini mencolok terijadi sejak 2015 angkanya masih di 4.241 kasus, dan meningkat hingga lebih dari dua kali lipat pada 2016 yang mencapai 13.063 kasus. Data pemetaaninteraksi di sosial media khususnya wilayah Kendari terdapat sekitar 800 akun yang memberi interaksi perihal Gay.Hal ini diindikasikan akan mempengaruhi prevalensi kejadian HIV/AIDS di Kota Kendari. Penelitian ini bertujuan untukmemetakan interaksi perilaku berisiko Gay sebagai early warning system kasus HIV/AIDS. Social Network Analysismerupakan studi yang mempelajari tentang hubungan manusia dengan memanfaatkan teori graf. Penerapan SocialNetworkAnalysis dalam suatu aplikasi mampu menggambarkan relasi atau hubungan antar individu denganmelakukan visualisasi terkait centrality (titik pusat), between centrality (jalur pendek), juga closeness centrality yaknirata-rata jalur terpendek dari interaksi akun di laman FB. Untuk platform Facebook berdasarkan pada hasilpenghitungan diketahui bahwa akun yang berpengaruh terhadap interaksi jejaring sosial adalah akun Gay Kendariyang unggul pada nilai degree centrality,betweeness centrality, dan Closeness centrality. Akun Gay Kendari palingberpengaruh dalam interaksi jaringan sosial Facebook. Melalui social network analysis, penelitian ini memberikangambaran relasi perilaku berisiko LSL/Gay sebagai early warning system kasus HIV/AIDS di kota kendariKata kunci: analisis jaringan sosiai, gay, sistem peringatan dini, HIV/AIDS
UJI EFEKTIVITAS EKSTRAK ETANOL KULIT JERUK MANIS (CITRUS SINENSIS) TERHADAP BAKTERI PROPIONIBACTERIUM ACNES
Authors: Michiko Michiko , Manalu Cici Valentina , Mutia Maya Sari
Published: March 2020

Abstrak Jeruk manis adalah tanaman yang paling sering dijumpai di Indonesia khususnya Sumatera Utara yang telah diketahui banyak manfaatnya. Buah jeruk manis kaya akan vitamin c dan kulit buah jeruk manis jugamengandung flavonoid dan alkaloid yang bisa menghentikan pertumbuhan bakteri salah satunya bakteri penyebabjerawat yaitu Propionibacterium acnes, kulit jeruk juga berfungsi menghilangkan dan menyembuhkan bintik hitamserta menghaluskan kulit. Penelitian ini bertujuan untuk mulihat daya hambat antibakteri ekstrak etanol kulit jerukmanis terhadap pertumbuhan bakteri Propionibacterium acnes. Penelitian ini adalah penelitian eksperimentaldengan menggunakan metode difusi cakram. Hasil penelitian ini didapatkan pengujian ekstrak etanol kulit jerukmanis dengan konsentrasi 50%, 75%, dan 100%, berpengaruh dalam mencegah pertumbuhan bakteriPropionibacterium acnes, sedangkan pada konsentrasi 25% tidak berpengaruh dalam mencegah pertumbuhanbakteri Propionibacterium acnes. Kata Kunci :Antibakteri, ekstrak etanol kulit jeruk manis (citrus sinensis), propionibacterium acnes
Em busca do bom lugar
Authors: Carneiro da Cunha Nóbrega Maria de Lourdes , Trindade Isabella Leite
Published: March 2020

O espaço público da rua tem sido alvo de planejamento e ações projetuais fundamentais para intervenções urbanas contemporâneas, quando assume um novo papel de responsabilidade no planejamento das cidades e na qualidade de vida das pessoas, de forma a contribuir na criação de oportunidades econômicas e na promoção de equidade social; promovendo também a saúde da população e auxiliando nas práticas que envolvem a segurança pública. Portanto, a rua é hoje um elemento chave para as boas práticas de planejamento urbano que visam à sustentabilidade ambiental e econômica do lugar. Através da visão conceitual e antropológica de DaMatta (1997), sobre o exercício da cidadania no Brasil, e das recomendações urbanísticas de Ghel & Svarre (2018), que promovem o uso da rua como um espaço cidadão, experiências com projetos de parklets executados na cidade do Recife (Brasil) e emToronto (Canada) são analisados e a rua é discutida enquanto espaço de cidadania nas duas cidades. Nestas, as culturas e formas de ver e vivenciar a rua se mostram diferentes, refletindo, consequentemente, diferentes soluções projetuais para o uso da mesma, bem como para o uso e apropriação do espaçopúblico urbano.
Modelagem de Informação da Cidade (CIM) e suas potencialidades para gestão da manutenção urbana de Curitiba
Authors: Lopes Tiago Rocha
Published: March 2020

Tecnologias de maior eficiência para planejamento e gestão urbana são de grande interesse para instituições e órgãos públicos. Diante desta tendência a Modelagem de Informação da Cidade (CIM) surge como sofisticada plataforma de trabalho, permitindo que profissionais colaborem em projetos e informações da cidade atraves de um modelo 3D paramétrico. Neste conceito definiu-se por uma pesquisa bibliográfica qualitativa, visando explorar a ferramenta, suas especificidades e os inovadores conceitos de parametrização, com foco nas potencialidades de aplicação no planejamento e gestão urbana de Curitiba. Verificou-se o potencial prático do CIM, através da estruturação de um modelo tridimensional organizado, alimentado em camadas e de forma colaborativa podendo se tornar agente centralizador de informações. O artigo contribui para o entendimento da tecnologia e suas possibilidades, que poderiam agregar ao planejamento de ações de intervenção urbana, o acesso a informações técnicas auxiliandoem melhores análises quanto a potencialidadese interferências.
THE IMPACT OF HUMAN RESOURCE MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE CASE STUDY: MANUFACTURING ENTERPRISES IN KOSOVO
Authors: Jashari Arta , Kutllovci Enver
Published: March 2020

The purpose of this study is to examine the impact of human resource management practices on organizational performance. In this study a total of 100 managers of manufacturing firms in Kosovo from public and private sectors have responded to the survey. The survey questionnaire had contained 39 items covering selected HRM practices and organizational performance. Our empirical results show that managers of manufacturing firms in Kosovo recognize the importance of employees in their organization and apply practices to manage them effectively. The outcome of correlation analysis provides evidence that HRM practices positively and significantly influence organizational performance. Recruitment and selection practices show the strongest positive association with organizational performance (rho = 0.905) compared to other practices. Regarding to our findings we suggest that with a good recruiting and selection, the organization will fill with a group of potentially qualified candidates. Also, companies should continuously train and develop and involve their employees as they are viewed as the most important resources source of competitive advantage.
Chemistry and Physics of a Low-metallicity Hot Core in the Large Magellanic Cloud
Authors: Shimonishi Takashi , Das Ankan , Sakai Nami , Tanaka Kei E. I. , Aikawa Yuri , Onaka Takashi , Watanabe Yoshimasa , Nishimura Yuri
Published: March 2020

We here present the results of 0.1 pc scale observations in 250 and 350 GHz toward a newly-discovered hot molecular core in a nearby low-metallicity galaxy, the Large Magellanic Cloud (LMC), with the Atacama Large Millimeter/submillimeter Array. A variety of C/N/O/Si/S-bearing molecules are detected toward the high-mass young stellar object, ST16. A rotating protostellar envelope is for the first time detected outside our Galaxy by SO2 and 34SO lines. An outflow cavity is traced by CCH and CN. The isotope abundance of sulfur in the source is estimated to be 32S/34S = 17 and 32S/33S = 53 based on SO, SO2, and CS isotopologues, suggesting that both 34S and 33S are overabundant in the LMC. Rotation diagram analyses show that the source is associated with hot gas (>100 K) traced by high-excitation lines of CH3OH and SO2, as well as warm gas (∼50 K) traced by CH3OH, SO2, 34SO, OCS, and CH3CN lines. A comparison of molecular abundances between LMC and Galactic hot cores suggests that organic molecules (e.g., CH3OH, a classical hot core tracer) show a large abundance variation in low metallicity, where the present source is classified into an organic-poor hot core. Our astrochemical simulations suggest that different grain temperatures during the initial ice-forming stage would contribute to the chemical differentiation. In contrast, SO2 shows similar abundances within all of the known LMC hot cores, and the typical abundance roughly scales with the LMC’s metallicity. Nitrogen-bearing molecules are generally less abundant in the LMC hot cores, except for NO. The present results suggest that chemical compositions of hot cores do not always simply scale with the metallicity.
A New Way for Walén Test of Alfvénic Fluctuations in Solar Wind Streams via EEMD
Authors: Liu Jin , Wang ChuanBing , Wang PengYu , Du Dan , Li Xiang , Liu GuoQi
Published: March 2020

Pure Alfvén waves at 1 au can be effectively identified by a Walén test of plasma and magnetic field observations. In this study, a new method, based on the Ensemble Empirical Mode Decomposition (EEMD) technique, is proposed for analyzing Alfvén fluctuations in two ways: (1) the Walén test relied on a time-dependent frame, which is extracted from the trend of differences between plasma and Alfvén velocity; and (2) a modified Walén test of the reconstructed Alfvénic and plasma velocity fluctuations by EEMD, after removing the high/low-frequency components irrelevant to Alfvénicity. Referencing the three validated methods mentioned in Chao et al., the same four cases in high-speed solar wind steams are tested by the EEMD method, considering Alfvénic parameters such as the Walén slope, the standard deviation ratio, the Alfvén ratio, the normalized cross helicity, the normalized residual energy, and the mean deviation relative to 1. The test results indicate that the first EEMD method can improve most Alfvénic parameters, since a time-varying velocity of the De Hoffmann–Teller frame is obtained from the process of self-adaptive data analysis, especially for complex cases with nonstationary and multiple background frames. The second EEMD method provides a kind of flexible testing to reconstruct the optimal fluctuations satisfied for the Walén relation, which achieves similar or even better results than normal prior methods based on bandpass filtering. We suggest that the EEMD method can be an alternative way to identify large-amplitude Alfvén waves in solar wind streams with single-satellite data.
Detection of Strong Epicyclic Density Spikes in the GD-1 Stellar Stream: An Absence of Evidence for the Influence of Dark Matter Subhalos?
Authors: Ibata Rodrigo , Thomas Guillaume , Famaey Benoit , Malhan Khyati , Martin Nicolas , Monari Giacomo
Published: March 2020

The density variations in thin stellar streams may encode important information on the nature of dark matter. For instance, if dark matter aggregates into massive subhalos, these perturbers are expected to scatter stars out of dynamically cold stellar streams, possibly leading to detectable gaps in those structures. Here, we reexamine the density variations in the GD-1 stream, using Gaia Data Release 2 (DR2) astrometry and Panoramic Survey Telescope and Rapid Response System photometry, together with high-precision radial velocities measured with the Canada–France–Hawaii Telescope/ESPaDOnS and Very Large Telescope/Ultraviolet and Visual Echelle Spectrograph instruments and complemented with public radial velocity catalogs. We show that after correcting for projection effects, the density profile exhibits high contrast periodic peaks, separated by 2.64 ± 0.18 kpc. An N-body simulation is presented that reproduces this striking morphology with simple epicyclic motion in a smooth Galactic potential. We also discuss the reliability of measuring density variations using ground-based photometric surveys, and for the particular case of GD-1 we highlight some of the artifacts present in the Gaia DR2 catalog along its track. Massive dark subhalos do not appear to be required to explain the density clumping along GD-1.
Double White Dwarf Merger Products among High-mass White Dwarfs
Authors: Cheng 程思 Sihao 浩 , Cummings Jeffrey D. , Ménard Brice , Toonen Silvia
Published: March 2020

Double white dwarf (double-WD) binaries may merge within a Hubble time and produce high-mass WDs. Compared to other high-mass WDs, the double-WD merger products have higher velocity dispersion because they are older. With the power of Gaia data, we show strong evidence for double-WD merger products among high-mass WDs by analyzing the transverse-velocity distribution of more than 1000 high-mass WDs (0.8–1.3 M
⊙). We estimate that the fraction of double-WD merger products in our sample is about 20%. We also obtain a precise double-WD merger rate and its mass dependence. Our merger rate estimates are close to binary population synthesis results and support the idea that double-WD mergers may contribute to a significant fraction of type Ia supernovae.
The Bimodal Distribution in Exoplanet Radii: Considering Varying Core Compositions and H2 Envelope’s Sizes
Authors: Modirrousta-Galian Darius , Locci Daniele , Micela Giuseppina
Published: March 2020

Several models have been introduced in order to explain the radius distribution in exoplanet radii observed by Fulton et al. with one peak at

, the other at

, and the minimum at

. In this paper we focus on the hypothesis that the exoplanet size distribution is caused by stellar X-ray and ultraviolet (XUV)-induced atmospheric loss. We evolve 106 synthetic exoplanets by exposing them to XUV irradiation from synthetic zero-age main-sequence stars. For each planet we set a different interior composition, which ranged from 100 wt% Fe (very dense), through to 100 wt% MgSiO3 (average density), and to 100 wt%

ice (low density), with varying hydrogen envelope sizes that varied from 0  wt% (a negligible envelope) to 100 wt% (a negligible core). Our simulations were able to replicate the bimodal distribution in exoplanet radii. We argue that in order to reproduce the distribution by Fulton et al. it is mandatory for there to be a paucity of exoplanets with masses above

. Furthermore, our best-fit result predicts an initial flat distribution in exoplanet occurrence for

with a strong deficiency for planets with

. Our results are consistent with the

radius peak mostly encompassing denuded exoplanets, while the

radius peak is mainly comprised of exoplanets with large hydrogen envelopes.
The Role of the Parker Instability in Structuring the Interstellar Medium
Authors: Heintz Evan , Bustard Chad , Zweibel Ellen G.
Published: March 2020

The Parker instability, a Rayleigh–Taylor-like instability of thermal gas supported against gravity by magnetic fields and cosmic rays, is thought to be dynamically important for galaxy evolution, possibly promoting molecular cloud formation and the galactic dynamo. In previous work, we examined the effect of three different cosmic-ray transport models on the Parker instability: decoupled (γ

c
= 0), locked to the thermal gas (γ

c
= 4/3), and coupled to the gas with streaming by self-confinement. We expand on that work here by considering radiative cooling, a smooth gravitational potential, and simulations into the nonlinear regime. We determine that cosmic-ray transport away from compression points, whether by diffusion or streaming, is the largest driver of the instability. Heating due to cosmic-ray streaming is also destabilizing and especially affects the nonlinear regime. While cooling depressurizes the dense gas, streaming cosmic rays heat and inflate the diffuse extraplanar gas, greatly modifying the phase structure of the medium. In 3D, we find that the fastest growth favors short-wavelength modes in the horizontal direction perpendicular to the background magnetic field; this is imprinted on Faraday rotation measure maps that may be used to detect the Parker instability. The modifications to the Parker instability that we observe in this work have large implications for the structure and evolution of galaxies, and they highlight the major role that cosmic rays play in shaping their environments.
A New Approach to the Mass and Radius of Neutron Stars with Supernova Neutrinos
Authors: Nakazato Ken’ichiro , Suzuki Hideyuki
Published: March 2020

Neutron stars are formed in core-collapse supernova explosions, where a large number of neutrinos are emitted. In this paper, supernova neutrino light curves are computed for the cooling phase of protoneutron stars, which lasts a few minutes. In the numerical simulations, 90 models of the phenomenological equation of state with different incompressibilities, symmetry energies, and nucleon effective masses are employed for a comprehensive study. It is found that the cooling timescale is longer for a model with a larger neutron star mass and a smaller neutron star radius. Furthermore, a theoretical expression of the cooling timescale is presented as a function of the mass and radius and it is found to describe the numerical results faithfully. These findings suggest that diagnosing the mass and radius of a newly formed neutron star using its neutrino signal is possible.
On the XUV Luminosity Evolution of TRAPPIST-1
Authors: Fleming David P. , Barnes Rory , Luger Rodrigo , VanderPlas Jacob T.
Published: March 2020

We model the long-term X-ray and ultraviolet (XUV) luminosity of TRAPPIST-1 to constrain the evolving high-energy radiation environment experienced by its planetary system. Using a Markov Chain Monte Carlo (MCMC) method, we derive probabilistic constraints for TRAPPIST-1's stellar and XUV evolution that account for observational uncertainties, degeneracies between model parameters, and empirical data of low-mass stars. We constrain TRAPPIST-1's mass to m
⋆ = 0.089 ± 0.001 M
⊙ and find that its early XUV luminosity likely saturated at

. From the posterior distribution, we infer that there is a ∼40% chance that TRAPPIST-1 is still in the saturated phase today, suggesting that TRAPPIST-1 has maintained high activity and L
XUV/L
bol ≈ 10−3 for several gigayears. TRAPPIST-1's planetary system therefore likely experienced a persistent and extreme XUV flux environment, potentially driving significant atmospheric erosion and volatile loss. The inner planets likely received XUV fluxes ∼103–104 times that of the modern Earth during TRAPPIST-1's ∼1 Gyr long pre-main-sequence phase. Deriving these constraints via MCMC is computationally nontrivial, so scaling our methods to constrain the XUV evolution of a larger number of M dwarfs that harbor terrestrial exoplanets would incur significant computational expenses. We demonstrate that approxposterior, an open source Python machine learning package for approximate Bayesian inference using Gaussian processes, accurately and efficiently replicates our analysis using 980 times less computational time and 1330 times fewer simulations than MCMC sampling using emcee. We find that approxposterior derives constraints with mean errors on the best-fit values and 1σ uncertainties of 0.61% and 5.5%, respectively, relative to emcee.
Global Simulations of Self-gravitating Magnetized Protoplanetary Disks
Authors: Deng Hongping , Mayer Lucio , Latter Henrik
Published: March 2020

In the early stages of a protoplanetary disk, turbulence generated by gravitational instability (GI) should feature significantly in the disk’s evolution. At the same time, the disk may be sufficiently ionized for magnetic fields to play some role in the dynamics. In this paper, we report on global three-dimensional magnetohydrodynamical simulations of a self-gravitating protoplanetary disk using the meshless finite mass Lagrangian technique. We confirm that GI spiral waves trigger a dynamo that amplifies an initial magnetic field to nearly thermal amplitudes (plasma β < 10), an order of magnitude greater than that generated by the magnetorotational instability alone. We also determine the dynamo’s nonlinear back reaction on the gravito-turbulent flow: the saturated state is substantially hotter, with an associated larger Toomre parameter and weaker, more “flocculent” spirals. But perhaps of greater import is the dynamo’s boosting of accretion via a significant Maxwell stress; mass accretion is enhanced by factors of several relative to either pure GI or pure magnetorotational instability. Our simulations use ideal MHD, an admittedly poor approximation in protoplanetary disks, and thus, future studies should explore the full gamut of nonideal MHD. In preparation for that, we exhibit a small number of ohmic runs that reveal that the dynamo, if anything, is stronger in a nonideal environment. This work confirms that magnetic fields are a potentially critical ingredient in gravito-turbulent young disks, possibly controlling their evolution, especially via their enhancement of (potentially episodic) accretion.
HST/COS Observations of Quasar Outflows in the 500–1050 Å Rest Frame. IV. The Largest Broad Absorption Line Acceleration
Authors: Xu Xinfeng , Arav Nahum , Miller Timothy , Kriss Gerard A. , Plesha Rachel
Published: March 2020

We present an analysis of the broad absorption line (BAL) velocity shift that appeared in one of the outflow systems in quasar SDSS J1042+1646. Observations were taken by the Hubble Space Telescope/Cosmic Origins Spectrograph in 2011 and 2017 in the 500–1050 Å rest frame. The outflow’s velocity centroid shifted by ∼−1550 km s−1 from −19,500 km s−1 to −21,050 km s−1 over a rest-frame time of 3.2 yr. The velocity shift signatures are most apparent in the absorption features from the Ne viii
λλ770.41 and 780.32 doublet and are supported by the absorption troughs from O v
λ629.73 and the Mg x
λλ609.79 and 624.94 doublet. This is the first time where a quasar outflow velocity shift is observed in troughs from more than one ion and in distinct troughs from a doublet transition (Ne viii). We attribute the velocity shift to an acceleration of an existing outflow as we are able to exclude photoionization changes and motion of material into and out of the line of sight as alternate explanations. This leads to an average acceleration of 480 km s−1 yr−1 (1.52 cm s−2) in the quasar rest frame. Both the acceleration and the absolute velocity shift are the largest reported for a quasar outflow to date. Based on the absorption troughs of the O v* multiplet, we derive a range for the distance of the outflow (R) from the central source, 0.05 pc < R < 54.3 pc. This outflow shows similarities with the fast X-ray outflow detected in quasar PG 1211+143. We use the acceleration and velocity shift to constrain radiatively accelerated active galactic nucleus disk–wind models and use them to make predictions for future observations.
HST/COS Observations of Quasar Outflows in the 500–1050 Å Rest Frame. III. Four Similar Outflows in 2MASS J1051+1247 with Enough Energy to Be Major Contributors to AGN Feedback*
Authors: Miller Timothy R. , Arav Nahum , Xu Xinfeng , Kriss Gerard A. , Plesha Rachel J.
Published: March 2020

We detect four very energetic outflows in the Hubble Space Telescope/Cosmic Origins Spectrograph spectra of quasar 2MASS J1051+1247 with a combined kinetic luminosity (

) of 1046 erg s−1. Remarkable similarities are seen in these outflows: velocity centroids between 4900 and 5700 km s−1, distances from the central source (R) of a few hundred parsecs that are all consistent within the errors, and an

within a factor of two for all outflows. Hence, a common origin for the outflows is probable. Most of the outflowing mass resides in a very high-ionization phase evident by troughs from Ne viii, Na ix, Mg x, and Si xii, which connect the physical conditions of these ultraviolet outflows to the X-ray warm absorber outflows seen in nearby Seyfert galaxies. Three of the outflows have two or three independent diagnostics for the electron number density, yielding consistent values for each outflow, which increase the robustness of the R determinations. Troughs from never-before-seen ionic transitions of Ar vi, O iv*, Ne vi*, and Ne v* are identified. With a combined

that is 7.0

% of the quasar’s Eddington luminosity, these outflows are prime candidates to be major agents for various active galactic nuclei feedback effects.
HST/COS Observations of Quasar Outflows in the 500–1050 Å Rest Frame. V. Richness of Physical Diagnostics and Ionization Potential-dependent Velocity Shift in PKS J0352-0711*
Authors: Miller Timothy R. , Arav Nahum , Xu Xinfeng , Kriss Gerard A. , Plesha Rachel J.
Published: March 2020

We analyze absorption troughs from two outflows within PKS J0352-0711 (S1 at −1950 km s−1 and S2 at −3150 km s−1) from spectra taken with Hubble Space Telescope/Cosmic Origins Spectrograph, which cover the diagnostic-rich 585–900 Å rest-frame wavelength range. In S2, for the first time we clearly detect absorption troughs from Ca iv, Ca v, Ca v*, Ca vii*, and Ca viii*. The column density measurement of Ca v suggests S2 has a super-solar metallicity. Both outflows require at least two ionization phases where the column density of the very high-ionization phase is roughly 15 times larger than the corresponding high-ionization phase. These high column densities and very high-ionization potential ions are similar to X-ray warm absorbers. The two phases of S2 show a unique velocity centroid shift between associated troughs. Through Monte Carlo measurements of the O v* absorption troughs, we determine the electron number density of S2 (fully corroborated by independent measurements from the Ca vii* and Ca viii* troughs), yielding a distance of 9 pc and a kinetic luminosity of 2 × 1043 erg s−1. S1 is located farther away at 500 pc from the central source with a kinetic luminosity of 1043 erg s−1.
HST/COS Observations of Quasar Outflows in the 500–1050 Å Rest Frame. VI. Wide, Energetic Outflows in SDSS J0755+2306
Authors: Xu Xinfeng , Arav Nahum , Miller Timothy , Kriss Gerard A. , Plesha Rachel
Published: March 2020

We present the analysis of two outflows (S1 at −5500 km s−1 and S2 at −9700 km s−1) seen in recent Hubble Space Telescope/Cosmic Origins Spectrograph observations of quasar SDSS J0755+2306 (z = 0.854). The outflows are detected as absorption troughs from both high-ionization species, including N iii, O iii, and S iv, and very high-ionization species, including Ar viii, Ne viii, and Na ix. The derived photoionization solutions show that each outflow requires a two ionization-phase solution. For S1, troughs from S iv* and S iv allow us to derive an electron number density,

 = 1.8 × 104 cm−3, and its distance from the central source of R = 270 pc. For S2, troughs from O iii* and O iii yield

 = 1.2 × 103 cm−3 and R = 1600 pc. The kinetic luminosity of S2 is >12% of the Eddington luminosity for the quasar and, therefore, can provide strong AGN feedback effects. Comparison of absorption troughs from O iii and O vi in both outflow systems supports the idea that for a given element, higher-ionization ions have larger covering fractions than lower-ionization ones.
HST/COS Observations of Quasar Outflows in the 500–1050 Å Rest Frame. I. The Most Energetic Outflows in the Universe and Other Discoveries
Authors: Arav Nahum , Xu Xinfeng , Miller Timothy , Kriss Gerard A. , Plesha Rachel
Published: March 2020

The Hubble Space Telescope/Cosmic Origins Spectrograph (COS) has opened a new discovery space for studying quasar absorption outflows and their contribution to active galactic nucleus (AGN) feedback. Specifically, COS provides high-quality far-ultraviolet (FUV) spectra covering the diagnostic-rich 500–1050 Å rest frame (hereafter, EUV500) of medium redshift objects. The quality and quantity of EUV500 diagnostic troughs allow us to probe the very high-ionization phase, which carries 90% or more of the outflowing material, as well as to determine the distance of most outflows from the central source (R). The first objective is impossible to achieve with ground-based spectra, and R can be measured in only ∼1% of them. Here, we summarize the main results of the first dedicated survey of such outflows, including the following.

1. Measurements of the three most energetic outflows to date, which can be the main agents for AGN feedback processes in the environments of the host galaxies.

2. All the outflows have a very high-ionization component, similar to the one found in warm absorbers, which carries most of the outflow’s kinetic luminosity. This finding suggests that all the high-ionization outflows observed from the ground also have a similar undetected very high-ionization component.

3. Of the 13 studied EUV500 outflows, 9 have 100 < R < 2000 parsecs, 2 have 5 < R < 20 parsecs, 1 has 0.05 < R < 50 parsecs, and in 1 case, R cannot be determined.

4. One of the outflows has the largest velocity shift (1550 km s−1) and acceleration (1.5 cm s−2) measured to date. This outflow is physically similar to the fast X-ray outflow detected in quasar PG 1211+143.