bluuebunny/crossref_metadata_2025 huggingface dataset:
Temperlenmiş Alüminyum 5754 Alaşımının Frezelenmesinde Kesme Parametrelerinin Taguchi Metodu Kullanılarak Optimizasyonu
Authors: SAMTAŞ Gürcan , KORUCU Salih
Published: February 2019

Alüminyum alaşımları günümüzde, yüksek dayanım ve ağırlık oranı, iyi korozyon ve yorulma direnci nedeniyle, otomotiv ve havacılık sanayinde, plastik enjeksiyon kalıplarında yaygın bir şekilde kullanılmaktadır. Bu çalışmada, 80x80x30 mm ebatlarında 5754-H111 temperlenmiş alüminyumun alaşımına, kaplamalı ve kaplamasız kesici uçlarla yüzey frezeleme işlemi uygulanmış ve yüzey frezeleme işlemi esnasında kesme parametrelerinin yüzey pürüzlülüğü üzerindeki etkileri araştırılmıştır. Deneylerde Taguchi L27 ortogonal dizini ile üç faklı kesici uç (Kaplamasız, Al2O3-TiCN-TiN kaplamalı, TiAlN Nano kaplamalı), kesme hızı (250, 350, 550 m/dak), ilerleme oranı (0.1, 0.2, 0.35 mm/diş) ve üç faklı kesme derinliği (1, 1.5, 2 mm) kullanılmıştır. Deneyler sonunda elde edilen değerler, sinyal-gürültü oranı (S/N), varyans analizi (ANOVA), üç boyutlu grafikler ve regresyon metodu kullanılarak değerlendirilmiştir. Deneylerden sonra en düşük yüzey pürüzlülüğü; kaplamasız kesici uç, 1 mm kesme derinliği, 350 m/dak kesme hızı ve 0.35 mm/diş ilerleme oranında elde edilmiştir. Bu kesme şartları için yüzey pürüzlülük değerleri hesaplamalarda 0.26 µm olarak bulunmuş, doğrulama deneylerinde 0.29 µm olarak ölçülmüştür.
Açık ve Yeşil Alanların Konut Seçimine Etkisinin Belirlenmesi Temelinde Bir Ölçek Geliştirme Çalışması
Authors: KARADAĞ Aybike Ayfer , GÜLTEKİN Yaşar Selman
Published: February 2019

Kent yaşamında konut seçimi önemli konulardan biridir. Konut, kentteki hareketliliği ve dolayısıyla kentin sosyokültürel ve ekonomik dağılımını yönlendirme gücüne sahip bir olgudur. Bu olgu kimi zaman kültürel yapının
beklentisi, kimi zaman yapıya uygun konut nitelikleri, kimi zamansa konuta uygun kültürel dağılım ilişkisini
gündeme getirmektedir. Bu çalışmanın amacı, Türkiye’de konut seçiminde etkili olan faktörlerin belirlenmesine
yönelik bir ölçek geliştirmektir. Çalışma, Türkiye’nin başkenti Ankara’nın Dikmen vadisi çevresinde yer alan bazı
mahallelerde yürütülmüştür. Çalışmada verilerin toplanması amacıyla anket çalışması yapılmıştır. Anket formu,
konut seçiminde etkili olan değişkenler (52 değişken), katılımcıların demografik özellikleri (11 soru) ve konuta
ilişkin özellikler (9 soru) olmak üzere üç bölüm ve toplam 21 sorudan oluşturulmuştur. Anket çalışması %95 güven
düzeyi ve %5 hata payı göz önünde bulundurularak; temsil yeteneğini de artırmak amacıyla 415 kişiye rasgele ve
yüz yüze görüşme tekniği ile yürütülmüştür. Veri analizleri SPSS22 istatistik paket programı aracılığı ile geçerlilik,
güvenirlik analizleri ve açımlayıcı faktör analizi (AFA) temelinde değerlendirilmiştir. Analiz sonuçlarına göre;
konut seçimini etkileyen faktörler (KSEF)özdeğerleri1’den büyük olan 4 faktör ve bu faktörlerin altında yer alan
20 değişkenle tanımlanmıştır. Bu faktörler Rekreasyonel Ulaşılabilirlik ve Yeşil Alanlar (RUYA), Konut Alanının
Çevre Kalitesi (KAÇK), Konutun Ekonomik Değeri (KED) ve Konutun Yapısal Özellikleri (KYO) isimleri ile
adlandırılmıştır. Açımlayıcı faktör analizi sonucunda faktör yük değerlerinin 0.652 ve 0.967 arasında değiştiği,
toplam varyansın da %68,499’unu açıkladığı belirlenmiştir. Konut seçimini etkileyen faktörlerin belirlenmesine
yönelik yapılan bu ölçek geliştirme çalışmasının Türkiye’nin farklı bölgelerinde yapılacak araştırmalarda
kullanılabilecek geçerlilik ve güvenilirlik değerlerine sahip bir ölçme aracı olduğu söylenebilir.
Azaltan DA-DA Dönüştürücüsü İçin Kayma Kip Denetleyici Tasarımı
Authors: EVRAN Fatih
Published: February 2019

Bu çalışmada, sürekli iletim kipinde çalışan azaltan da-da dönüştürücüsü için ikinci mertebeden bir kayma kip
denetleyicisinin tasarımı sunulmuştur. Önerilen denetleyici doğrusal olmayan bir denetim türü olup, sabit
anahtarlama frekansında çalışmaktadır. Yük ve giriş gerilimi değişimleri altında önerilen denetleyicinin
geçerliliği PSIM benzetim sonuçları ile doğrulanmıştır.
Runway Capacity Enhancement Analysis of End-Around Taxiway at Istanbul New Airport
Authors: AYDOĞAN Emre , ÇETEK Cem
Published: February 2019

This paper analyses the capacity effects of End-Around Taxiway at Istanbul New Airport which is planned to serve for 150 million passengers per year with the 6 independent runways when it is constructed completely. The new airport will be in service with its two independent and two dependent parallel runways after the first phase of the construction. The airport has also end-around taxiways to increase the runway capacity. End-around taxiways allow the aircraft continue to their taxi movements without the runway crossing. The runway crossing decreases the runway capacity since the crossing aircraft blocks the runway. The effects of runway crossing problem on the runway capacity are analysed in this paper. Istanbul New Airport first phase configuration is modelled with Simmod discrete event simulation tool in two different scenarios which are named baseline and alternative. The baseline scenario represents the new airport without end-around taxiways. The alternative scenario represents the same condition with end-around taxiways. The capacity problems of runway crossing are analysed and it is enhanced with the end-around taxiway usage. The analysis shows the runway capacities with and without runway crossing.
Air Traffic Flow Impact Analysis of RECAT for Istanbul New Airport using Discrete-Event Simulation
Authors: AYBEK ÇETEK Fulya , AYDOĞAN Emre
Published: February 2019

The rapid annual
increase in air traffic volume leads to serious capacity problems especially at
major airports. Airport runway capacities are significantly limited by wake
turbulence phenomena between arriving and departing aircraft pairs. RECAT, an
international joint effort, aims to redefine wake turbulence categories and
their associated minima to increase runway capacities. This study analyses the
impacts of possible RECAT implementation on arriving and departing flight sequences
for independent parallel runway configurations with saturated demand. Istanbul
New Airport is modelled as a test case using Simmod Pro, a discrete-event
simulation tool. A baseline and an alternative scenario has been created to
compare the current and RECAT separation minima. The implementation of RECAT
improved the total throughput and reduced airborne delays for arriving flights
while it increased departure queue delays and lengths. Further operational
strategies are required to increase the benefits of RECAT for departing flight
sequences.
Fosil Yakıtlı Bir Enerji Santrali Prosesinin Modellenmesi ve Ana Buhar Basıncı Parametresinin Kestirim Başarımı Analizi
Authors: TUNÇKAYA Yasin
Published: February 2019

Günümüzde sıkça kullanılmakta olan fosil yakıtlı enerji santralleri, sanayi ve üretim sektörünün vazgeçilmezi olan elektrik enerjisi ve buhar ihtiyacını gidermesi nedeniyle kritik bir öneme sahip olmakla birlikte, çevreye olumsuz etkileri nedeniyle değişik tartışmalara sebebiyet vermektedir. Bu çalışmada, Türkiye’ de kurulu bulunan 135 MW’ lık enerji üretim kapasitesine sahip fosil yakıtlı bir enerji santralinin işletme ve proses analizi yapılmış ve kritik operasyon parametrelerinden 19 adeti seçilerek güncel yapay zeka yöntemlerinden olan Yapay Sinir Ağları (YSA) ile santralin modellemesi gerçekleştirilmiştir. Santralden elde edilen geçmiş döneme ait her bir parametreye ait 1440 adet proses verisi, veri madenciliği teknikleri ile harmanlanmış, işletmenin en önemli çıkış parametrelerinden biri olan ana buhar basıncı değerinin çeşitli yaklaşım ve denemelerle tahmin edildiği bir kestirim çalışması sunulmuştur. Çıkan sonuçlar, istatistiksel kestirim yöntemlerinden biri olan ve literatürde sıkça kullanılan Çoklu Doğrusal Regresyon (ÇDR) yöntemi ile karşılaştırılmıştır. Kök ortalama karesel hata yaklaşımı ve determinasyon katsayısı ile başarım takibi yapılan bu kestirim çalışmasında, sırasıyla, YSA modelinden elde edilen 0,994 ve 0,0039 değerlerinin, ÇDR modelinden elde edilen 0,970 ve 0,0172 değerlerine göre daha iyi başarım gösterdiği bulunmuştur. Ayrıca literatürdeki benzer bir çalışma ile karşılaştırma yapılarak, çalışmada seçilen giriş değişkenleri ve YSA model parametrelerinin çok başarılı olduğu gösterilmiştir.
UNA DÉCADA SEMBRANDO LA SEMILLA DEL CONOCIMIENTO FORESTAL
Authors: Mallén Rivera Carlos
Published: February 2019

La Comisión Nacional Forestal (Conafor), organismo público descentralizado del gobierno federal fue creada mediante decreto del 4 de abril del 2001, con la misión de impulsar la protección, la conservación, la restauración y el aprovechamiento de los bosques mexicanos, a través de programas y políticas públicas basados en el modelo de desarrollo forestal sustentable, en corresponsabilidad con los sectores productivo, académico, profesional, así como con la sociedad y su gobierno. Y, aunque, esta perspectiva se ha definido a lo largo del último medio siglo, al promover la transformación de la política forestal, el mandato de la última década de la Conafor ha confirmado la responsabilidad de México hacia el mundo, que a su vez constituye una obligación ética con las futuras generaciones. Coordinar e implementar una política forestal bien diseñada es una encomienda compleja que requiere alcanzar metas y concretar avances, lo cual va de la mano con el desarrollo de un conocimiento profundo de la riqueza forestal.
ESTRATEGIAS PARA EL APROVECHAMIENTO SUSTENTABLE DE LAS ORQUÍDEAS DE MÉXICO
Authors: Menchaca García Rebeca Alicia , Lozano Rodríguez Miguel Ángel , Sánchez Morales Lorena
Published: February 2019

Las orquídeas mexicanas son uno de los grupos de plantas de mayor interés hortícola en los ámbitos nacional e internacional. Dado que no hay suficientes viveros con planes de manejo y programas de reproducción para satisfacer la demanda que existe de estos organismos, numerosos ejemplares han sido extraídos de su hábitat durante más de 200 años. Se han registrado más de 1,200 especies en México y de ellas, alrededor de 200 están catalogadas con alguna categoría de riesgo. Una de las estrategias de conservación aquí propuestas es promover su aprovechamiento sustentable en las comunidades rurales, mediante el registro de viveros como Unidades de Manejo Ambiental (UMA), lo que permitirá disminuir la presión que ejerce la recolección sobre sus poblaciones. Debido a la dificultad para que sus semillas germinen y el tiempo que se invierte en obtener plantas por división vegetativa, los viveros rurales tienen que estar en coordinación con centros de reproducción masiva, donde se pueden obtener plantas en cantidades suficientes para su comercialización mediante técnicas de micropropagación. Además, es factible propagar materiales selectos con características ornamentales atractivos, los cuales les aportan valor agregado para su venta. En el presente documento se exponen algunas experiencias y se proponen estrategias para el aprovechamiento sustentable de las orquídeas de México.
ECUACIONES AlOmétrICAS pArA EStImAr bIOmASA AérEA dE Prosopis laevigata (Humb. & bonpl. ex Willd.) m.C. Johnst.
Authors: Méndez González Jorge , Turlan Medina Osvaldo Augusto , Ríos Saucedo Julio Cesar , Nájera Luna Juan Abel
Published: February 2019

La medición y evaluación de la biomasa aérea de árboles juega un papel importante en el manejo de los recursos forestales. Existen muchos modelos alométricos para especies tropicales y subtropicales, pero muy pocos para las zonas semiáridas. Un total de 144 árboles de Prosopis laevigata, de siete rodales naturales localizados en el noreste de méxico, fueron muestreados por un método destructivo con la finalidad de desarrollar ecuaciones para la predicción de la biomasa total. la selección de los individuos cubrió varios intervalos de diámetro basal (5.2 a 41.8 cm) y de altura (1.4 a 9.7 m). Se contrastaron procedimientos de ajuste no-lineal y lineal de la ecuación alométrica y = a·xb + ε, para estimar la biomasa aérea de P. laevigata. Aunque, el procedimiento no-lineal tuvo el mejor ajuste (r2 = 0.95 y p < 0.001) vs el lineal (r2 = 0.84 y p < 0.001), los resultados demuestran que la transformación logarítmica y el uso de un factor de corrección en alometría mejora de forma significativa la predicción de la biomasa. Se concluye que los modelos de regresión obtenidos al usar el diámetro basal pueden ser aplicados para la estimación de biomasa total, en árboles de Prosopis laevigata. Así mismo, el número mínimo de observaciones necesarias para calcular los parámetros a y b, con varianza mínima es de 40 ejemplares.
PENINGKATAN PRODUKSI USAHA TANI PADI DI KECAMATAN GUNUNGSARI MELALUI PENYULUHAN TEKNOLOGI PRODUKSI
Authors: Ridwan Ridwan , Karyadi Lalu Wirasapta , Juniarsih Nuning
Published: February 2019

Kegiatan pengabdian ini bertujuan untuk melakukan diseminasi informasi (sosialisasi) dan advokasi tentang teknologi produksi dalam pelaksanaan. Pengabdian ini dilaksanakan di wilayah Kecamatan Gunungsari, yaitu di Desa Tamansari, sedangkan tempat kegiatan ditentukan berdasarkan kesepakatan antara Tim Penyuluh dengan Warga sasaran. Demikian juga waktu pelaksanaan kegiatan ditentukan berdasarkan kesepakatan. Pada hari-H kegiatan Tim mendatangi lokasi kegiatan tepat waktu.   Materi penyuluhan disampaikan oleh seluruh anggota Tim secara bergiliran yang dilakukan dengan metode ceramah, diskusi, serta menggunakan model Pendidikan Orang Dewasa (POD). Hasil evaluasi menunjukkan bahwa peserta penyuluhan umumnya memiliki pemahaman yang baik terhadap materi yang disampaikan oleh Tim Penyuluh. Hal ini mengindikasikan tentang cukup efektifnya penyuluhan ini dalam upaya penyebarluasan informasi mengenai teknologi produksi padi dalam rangka pelaksanaan Program Upsus Pajale. Penggunaan metode ceramah dan diskusi dalam kegiatan penyuluhan ini memungkinkan terjadinya proses komunikasi dua arah antara narasumber dengan audiens secara langsung dan bertatap muka. Melalui tatap muka di kelas, audiens dapat menyampaikan pertanyaan, pendapat dan saran kepada para narasumber secara langsung dan para narasumber pun dapat memberikan umpan balik (feedback) secara langsung, sehingga terjadi komunikasi yang bersifat dialogis antara narasumber dengan para peserta, yang pada gilirannya komunikasi antara keduanya menjadi efektif. Hasil evaluasi juga menunjukkan bahwa respons peserta penyuluhan terhadap pelaksanaan penyuluhan ini tergolong positif. Umumnya peserta penyuluhan menilai bahwa baik metode, media maupun bahasa pengantar yang digunakan oleh para narasumber dalam kegiatan penyuluhan mendukung terwujudnya pemahaman yang baik bagi peserta penyuluhan itu sendiri mengenai materi yang disampaikan oleh Tim Penyuluh.
Eksperimen Mandiri Siswa dalam Penentuan Percepatan Gravitasi Bumi pada Materi Gerak Jatuh Bebas
Authors: Firdaus Thoha , Erwin Erwin , Rosmiati Rosmiati
Published: February 2019

Siswa selalu berpikir bahwa jumlah massa mempengaruhi percepatan jatuh benda vertikal. Melalui eksperimen mandiri yang dilakukan siswa kelas X, akan mengubah cara berpikir siswa dengan benar. Tujuan penelitian ini adalah menentukan berapa waktu tempuh yang dimiliki dua benda yang mengalami gerak jatuh bebas dengan massa yang berbeda. Eksperimen menggunakan media gerak jatuh bebas yang terintegrasi oleh komputer/laptop. Eksperimen didampingi oleh guru, kemudian mereka menyimpulkan sendiri hasil dari analisis yang didapatkan. Hasil yang didapat siswa untuk kedua benda masing-masing adalah 0,4904 s dan 0,4828 s.
Optical and Structural Investigation of Mg2+ doped ZnO Nanoparticles using Gymnema sylvestre and Mangifera indica Leaves Extracts
Authors: . M. Karthikeyan , . A. Jafar Ahamed , . P. Vijaya Kumar
Published: February 2019

In green nanotechnology, plant is used for the synthesis of nanoparticles which are gaining considerable interest among researchers as an eco-friendly alternative to conventional physical and chemical methods, as this approach eliminates the use of toxic chemicals. The present study describes the synthesis of Mg2+ (magnesium) doped zinc oxide (ZnO) nanoparticles (NPs) M1 using leaves extract of Gymnema sylvestre (G. sylvestre) belonging to Asclepiadaceae family and M2 using Mangifera indica (M. indica) belonging to Anacardiaceae family as reducing as well as capping agents. The obtained Mg2+ doped ZnO NPs (M1 and M2) were characterized by X-ray diffraction (XRD) studies, field emission scanning electron microscopy (FESEM), elemental analysis (EDAX), Fourier transform infrared spectroscopy (FTIR), UV-vis spectroscopy and photoluminescence (PL) spectra.
ESTIMATION OF THE BIOPRESERVATIVE OBTAINING METHOD MODIFICATION FOR PERENNIAL GRASSES SILAGE MAKING BY FERMENTATIVE ACTIVITY
Authors: Rabinovich G. Yu. , Vasilyeva Е. А.
Published: February 2019

For a long time, scientific research has been carried out at the VNIIMZ on the basis of the Department of Biotechnology in the field of bioconversion of organic resources into biological means intended for use in agriculture as fertilizers, plant growth stimulants, and bioconservants for silage forage crops. One of the promising basic developments of the department is the patented way of obtaining a biokonservant by peat fermentation with excrement of agricultural animals, including extraction of bioactive substances, which, in fact, constitute the basis of the product being formed. The material of the publication presented contains a comparative analysis of a patented method for producing a biokonservant and a modified method in which new biostimulant and extractant are used. The investigated processes were compared in the dynamics of enzyme activity. The results of the studies showed that the introduction of a new multicomponent biostimulator activated the enzymatic activity in the bioconversion process of the initial substrate. Two bursts of oxidation-reduction reaction activity were recorded at the key stages of the process (the oxidation-reduction ratio of the initial mixture was 1.3 and the fermentation product was 1.23 in the new technology versus 0.14 and 0.06 in the base technology, respectively). In this case, the high activity of invertase in the initial substrate provided an intensification of the process of cleavage of complex carbohydrates to monomers. The change in the extractant had no significant effect on the enzymatic activity. The extraction period was characterized by a decrease in the activity of all the enzymes studied, regardless of the technology used. Additional studies of a complex biostimulator are required to increase and grow lactic acid microflora, as in the finished biokonservant by the new technology, the lactic acid microflora titer is nx107 cfu / ml, which is lower by an order of magnitude than in the finished product according to the basic technology.
USING OF BINARY SOWING FOR INCREASING OF SOIL AND BIOTIC COMPLEX AND CROP PRODUCTIVITY
Authors: Zhitin Y. I. , Stekolnikova N. V.
Published: February 2019

This work includes the results of studies whose purpose was to study the agrophytocenosis structure of winter wheat using seed culture (hairy vetch (winter)) and the effectiveness of the subsequent application of its biomass into the agrocenosis together with secondary production of grain crops. Held trials were conducted in 2014-2017. on the basis of the Trust Parneship “Rykanskoe” of the Novousmansky District of the Voronezh Region, in the link of the grain cultivation crop rotation of winter wheat is a potato. The objects of researches were the winter wheat Bezenchukskaya 380, Impala potatoes, hairy vetch (winter) Glinkovskaya, growing in grain fields vegetation, winter wheat straw, biomass of hairy vetch. The undersowing of hairy vetch (winter) in the agrocenosis of winter wheat was carried out in the spring period simultaneously with root fertilizing of a grain crop (ammonium saltpeter 30 kg / ha a.i.) with a seeding rate of 15 kg / ha. After the monoculture was harvested, straw was applied into the soil with ammonium saltpeter 10 kg a.i. per 1 ton of straw and together with the green mass of hairy vetch. It has been established that the application of hairy vetch to the agrocenosis has influenced on the development of such growing in grain fields plants as chicken millet, green bristle, shepherd's purse, field pennycress, odorless chamomile, field violet, cathcweed, satinflower. The decrease in the number of growing in grain fields plants was 43.3-46.0%. The changes in the composition and structure of the agrophytocenosis have a positive effect on the winter wheat yield, the excess relative to the control variant was 19.3-21.2%. The advantage of straw plowing together with hairy vetch biomass in comparison with the application of straw into the soil together with mineral nitrogen fertilizer in the rate of decomposition of linen by 8.9-12.6%, the content of labile phosphorus - 5.7% and exchangeable potassium - 6.3% was found. The highest yield of potatoes was formed herbage of vetch and straw of 20.9 t / ha, which exceeded the variant of applying straw together with mineral fertilizer by 23.7%
INTERACTION OF POTASSIUM AND CALCIUM REGIMES OF LEACHED CHERNOZEM IN MULTI-YEAR APPLICATION OF FERTILIZERS AND AMELIORANT
Authors: Myazin N. G. , Kozhokina А. N. , Brekhov P. Т. , Podrezov P. I.
Published: February 2019

There is no alternative to soil liming as an environmental protection measures. It is difficult to overestimate the role that the application of calcium ameliorants has on soil properties. But besides a positive effect on soil properties, liming leads to some deterioration in the conditions of potassium plants nutrition. For studying this circumstance, researches were carried out in a long-term stationary experiment on leached chernozem in sugar beet agrocoenosis in the Voronezh region. It is established that the application of mineral fertilizers in doses of NPK of 120 and 240 kg / ha has resulted in a decrease of exchangeable calcium content in comparison with the backing variant by 0.7–1.2 mg-eq. / 100 g of soil. At the same time, there was an increase in soil availability of exchangeable potassium by one class in contrast with no treatment. In the case of soil liming, this process was less revealed — soil availability with exchangeable potassium remained at the level of control. With the application of mineral fertilizers on the back of organic aftereffect, the content of fixed potassium increased. The use of N120P120K120 provided 26 mg / kg of soil for a higher content of fixed potassium than the application of N240P240K240. The highest content of fixed potassium was observed with a joint consequence of manure and defecation - 649 mg / kg of soil. An increase in the activity of calcium ions in the soil led to a decrease in the activity of potassium ions. The interinfluence of these indicators was intensified by applying calcium ameliorants into the soil. The correlation coefficient between the pCa value and the potassium potential of the non-liming soil was - (–0.675) before sowing sugar beet and (–0.684) before harvesting, and on the ameliorated variants (–0.814) and (–0.500), respectively. Applying mineral fertilizers on various grounds increased crop yield by 16.0–18.2 t / ha in comparison with no treatment.
NEW GENERATION FEED ADDITIVE IN POULTRY BREEDING
Authors: Naumova L. I. , Klychnikov М. Т. , Klychnikova N. F.
Published: February 2019

The analysis of different doses of complex feed additive to poultry ration have been made. The influence of new feed additive with bioresources of the Far East use on productive poultry indexes, on production quality and digestibility of nutritious matters of mixed feed has been studied. Patrinia scabiosifolia, Acanthopanax sesseliflorum, cones of cedare nut husk, brown seaweed, macro- and microelements, vitamins were the object of research. As a result of these researches author presents more effective norms of complex feed additive use in poultry farming of Khabarovsk Kray. The recipe of feed additive from local vegetable resources and complex of vitamins and minerals for use in laying hens nutrition was worked out. The aim of this work was to rise zootechnic and economic indexes of poultry production. The introduction of complex feed additive in ration influenced positively on the digestibility, raised the content of Omega-3 fat acid in egg of laying hens. The increase of Omega-3 fat acid quantity promotes decrease of cholesterol in yolk of egg. In the experimental groups there was a more intensive use of nutrients in diet, mainly due to raw protein, fats, mineral substances – calcium and phosphorus. The use of a new feed additive had a positive effect on the hatchability of eggs, the development of internal organs (heart, liver) and the live weight of chicks obtained from the eggs of chickens in experimental groups. Additionally, the content of mineral substances (calcium, potassium, phosphorus) in the egg of test group was higher than in the control on average by 2.3-5.1%.
Top 10 Blockchain Predictions for the (Near) Future of Healthcare
Authors: Halamka John D , Alterovitz Gil , Buchanan William J. , Cenaj Tory , Clauson Kevin A. , Dhillon Vikram , Hudson Florence D. , Mokhtari Manouchehr (Mitch) , Porto Dennis A. , Rutschman Ana , Ngo Anh L.
Published: February 2019

To review blockchain lessons learned in 2018 and near-future predictions for blockchain in healthcare, Blockchain in Healthcare Today (BHTY) asked the world's blockchain in healthcare experts to share their insights. Here, our internationally-renowned BHTY peer-review board discusses their major predictions.Based on their responses, presented in detail below, ten major themes (Table ) for the future of blockchain in healthcare will emerge over the 12 months.

CORRIGENDUM:

This following paragraph has been corrected (page 3, first paragraph) from:

"Fourth, with over 1000 insurance companies in the country, filling out paperwork to documentprovider training and licensure is a nightmare. The Synaptic Health Alliance aims to simplifythis process by putting all credentialing information on a distributed public ledger for all stakeholders to access.1"

To:

"Fourth, keeping health care provider directories maintained by health plans up-to-date is a critical, complex issue facing organizations across the health care system. The first project of the Synaptic Health Alliance aims to simplify this process by putting provider demographic information on a permissioned blockchain for Alliance members to access and maintain.1"
The Causal Structure of Suppressor Variables
Authors: Kim Yongnam
Published: February 2019

Suppression effects in multiple linear regression are one of the most elusive phenomena in the educational and psychological measurement literature. The question is, How can including a variable, which is completely unrelated to the criterion variable, in regression models significantly increase the predictive power of the regression models? In this article, we view suppression from a causal perspective and uncover the causal structure of suppressor variables. Using causal discovery algorithms, we show that classical suppressors defined by Horst (1941) are generated from causal structures which reveal the equivalence between suppressors and instrumental variables. Although the educational and psychological measurement literature has long recommended that researchers include suppressors in regression models, the causal inference literature has recently recommended that researchers exclude instrumental variables. The conflicting views between the two disciplines can be resolved by considering the different purposes of statistical models, prediction and causal explanation.
Nutrición enteral temprana en pacientes con pancreatitis agudas leves: estudio clínico randomizado
Authors: Cecenarro Rodolfo Raúl , Bonci Laura , Kasparian Andrés , Gramática (h) Luis
Published: February 2019

Introduction: Acute pancreatitis (AP) is an inflammatory disease of the pancreas that spans a wide range ranging from mild to critical forms. Contrary to the progress in the management of severe AP, the MAP has not presented significant changes in recent years. There are also no studies that establish a clear relationship between EEN in MAP and levels of albuminemia and CRP.Materials and methods: A randomized, longitudinal and prospective clinical study was conducted. Patients were divided into 2 groups. The experimental group (G1) was indicated from the entrance a diet  hyperproteic low in colecistokinetics diet, and to the control group (G2) nothing by mouth.Results: 19 patients were randomly distributed in 57.89% in the G2 and 42.11% in the G1. The G1 presented a higher average hospital stay in relation to the G2, such differences were not significant (p> 0.05). The G1 presented higher values of CRP in relation to the G2 significantly (p ?0.05). There was a decrease in albumin levels in both groups (p ?0.05). It was observed in both groups that, as CRP levels increased, albumin levels decreased significantly (p <0.01).Conclusions: Albuminemia levels decreased significantly in both groups, and this decrease was more marked in the EEN group. The decrease in albuminemia had a direct correlation with CRP levels, which were higher in the G1.
Kurs Oranı Ve Artık Gaz Kesrinin Otto Çevrimli Bir Motorun Performansına Etkisi
Authors: ARABACI Emre , KILIÇ Bayram
Published: February 2019

İçten yanmalı motorların tasarım
parametrelerinin pratik bir şekilde incelenmesi için sonlu zaman termodinamiği
modeli sıklıkla kullanılmaktadır. Yapılan bu çalışmada kurs oranı ve artık gaz
kesrinin, tersinmezlikler, ısı kayıpları ve sürtünmenin de hesaba katıldığı bir
otto çevrimli motorun performansı üzerindeki etkileri incelenmiştir. Çevrim
başlangıç sıcaklığı artık gaz kesrinin bir fonksiyonu olarak tanımlanmıştır. Bu
çalışma sonucunda kurs oranının artmasıyla, ve artık gaz kesrinin artmasıyla
birlikte motor performansında belirgin bir seviyede düşüş yaşandığı
görülmüştür.
LPG (R1270-PROPİLEN) SOĞUTUCU AKIŞKAN KULLANILAN BUHAR SIKIŞTIRMALI SOĞUTMA SİSTEMİNİN ENERJİ ANALİZİ
Authors: KILIÇ Bayram , ARABACI Emre
Published: February 2019

Bu çalışmada, hidrokarbon soğutucu akışkanlardan
biri olan LPG (R1270-Propilen) kullanılan buhar sıkıştırmalı soğutma sisteminin
enerji analizi yapılmıştır. Hesaplamalar için Coolpack programı kullanılmıştır.
LPG’nin (R1270-Propilen) farklı çalışma şartları için sistem performansına olan
etkileri incelenmiştir. Evaporatör sıcaklığı değişimine bağlı olarak
yapılan analizde çevrimin en yüksek COP değeri olan 8.65 değerine -1 oC
evaporatör sıcaklığı, 25 oC kondenser sıcaklığı olan çalışma
şartında ulaşılmıştır.
Mind the Gap: A Seven-Question Field-Map Highlights Consciousness Science’s Critical, Neglected, Terrain
Authors: Rosseinsky Nicholas Martin
Published: February 2019

I identify seven crucial questions for individual theories-of-consciousness, and apply them to five leading approaches (IIT, GNW, PC, HoT and Orch-OR), highlighting similarities and differences. Under simple quantification, the median score is 1.5/7 (or about 20%!), and the field-leader is Orch-OR (but still scoring only 2.5/7!). Beyond these introductory illustrations, the seven-question approach can map all theoretical stances, and identify what’s critically missing from today’s field.
Synthesis and evaluation of a collagen–brushite cement as a drug delivery system
Authors: Morilla Claudia , Lima Yailene M. , Fuentes Gastón , Almirall Amisel
Published: February 2019

Calcium phosphate cements are known for their biocompatibility and bioactivity, which has led to a significant increase in their use. They have the advantage of being prepared as a malleable paste that sets in a few minutes and can be easily applied in bone defects. In this research work, 6 brushite cement formulations were prepared and the effect of collagen addition and the release of tetracycline were evaluated. All cements gave a malleable paste that set in 2 or 3 min, resulting in a material with pores of 5–20 μm. The cements showed compression resistance values between 0.8 and 1.7 MPa, and the addition of collagen was the most influential factor in the increase of this property. Up to 40 % of the drug was released after 7 days and the effectiveness of its antimicrobial activity was confirmed.
Synthesis of SnO/SnO2 microsphere photocatalysts by ultrasonic reaction
Authors: Liang Baoyan , Zhang Wangxi , Zhang Yanli , Zhang Ruijie
Published: February 2019

SnO/SnO2 composites were synthesised through a simple solid-phase grinding-assisted ultrasonic reaction by using SnCl2 and NH4HCO3 as raw materials. Results showed that SnCl2 reacted with NH4HCO3 to form Sn6O4(OH)4 and NH4Cl through solid-phase grinding. Sn6O4(OH)4 was subsequently hydrolysed to SnO nanosheets. A small amount of SnO grains was transformed to SnO2. Different treatment processes played important roles in the composition, microstructural morphology and photocatalytic activity of SnO/SnO2 composites. The direct ultrasonication of ground products yielded microspheres comprising numerous SnO nanosheets and SnO2 nanoparticles with excellent visible photocatalytic properties, which can degrade 93.5% of methyl orange within 75 min.
An annotated bibliography of the Soviet palaeoichthyologist Leonid Glickman (1929–2000)
Authors: Popov E.V.
Published: February 2019

The paper presents a short biography and an annotated bibliography of the well-known Soviet palaeoichthyologist and evolutionary morphologist Leonid S. Glickman (1929–2000). His bibliography consists of 46 titles, including 2 monographs, 3 book chapters, 33 research papers, 4 popular papers, and 4 unpublished research reports and dissertations, devoted mainly to Cretaceous and Cenozoic elasmobranchs (principally Lamniformes). The publications cover a period of time between the years 1952 and 1998.
The life and scientific heritage of Leonid Sergeyevich Glickman (1929–2000)
Authors: Popov E.V. , Glickman E.L.
Published: February 2019

This paper consists of biographical data for well-known Soviet palaeoichthyologist Leonid S. Glickman (1929–2000). His life is divided into several stages: a childhood and evacuation during WWII (1929–1945), life in Saratov (1945–1950), Leningrad stage (1950–1970), working in the Russian Far East (1970–1982) and his life in Leningrad / Saint Petersburg (1982–2000). The Leningrad stage (1950–1970) was his most productive time in a scientific sense. During that time he carried out extensive field work, laid a basis of the largest collection of fossil shark teeth in the USSR (now deposited in the State Darwin Museum in Moscow) and wrote 60% of his scientific publications including the monograph “Sharks of Paleogene...” (1964a) and a section on Elasmobranchii in the volume of “Fundamentals of Paleontology” (1964b). In total, Glickman had published 42 papers (excepting dissertations, his thesis and an archive report), including two major monographs (1964a, 1980), two collective ones (1964b, 1987) as well as 33 other scientific papers. He had described nine families, 27 genera and more than 50 species and subspecies of elasmobranch fishes (mainly Lamniform sharks) from the Cretaceous and Cenozoic deposits of territory of the former Soviet Union. His large collections and his ability to think innovatively, allowed him to make some radical changes in shark systematics as well as to demonstrate their use in regional and global biostratigraphy. Four genera and four species of fossil sharks and rays as well as one species of Tertiary hamster from the Aral Sea region have been named in his honour.
‘Does Law Matter to Anthropology?’
Authors: Merry Sally Engle
Published: February 2019

This provocative question became the basis for a spirited discussion
at the 2017 meeting of the American Anthropological Association. My
first reaction, on hearing the question, was to ask, does anthropology
care whether it matters to law? As a discipline, anthropology and the
anthropology of law are producing excellent scholarship and have an
active scholarly life. But in response to this forum’s provocation article,
which clearly outlines the lack of courses on law and anthropology
in law schools, I decided that the relevant question was, why doesn’t
anthropology matter more to law than it does? The particular, most
serious concern appears to be, why are there not more law and anthropology
courses being offered in law schools? It is increasingly common
for law faculty in the United States to have PhDs as well as JDs, so why
are there so few anthropology/law PhD/JD faculty? Moreover, as there
is growing consensus that law schools instil a certain way of thinking
but lack preparation for the practice of law in reality and there is an
explosion of interest in clinical legal training, why does this educational
turn fail to provide a new role of legal anthropology, which focuses on
the practice of law, in clinical legal training?
PATHOGENIC BACTERIA IN WATERS AND DRINKING WATER-ASSOCIATED BIOFILMS
Authors: Tsvetanova Zvezdimira , Najdenski Hristo
Published: February 2019

In this review, the dissemination of bacterial pathogens in natural waters and the mechanisms of their transmission in drinking water, and the role of water-associated biofilms for their survival or growth are discussed. The current state of the studies on biofilm-formation potential of the emerged pathogens in drinking water and the role of interspecies interactions for attachment and survival of pathogenic bacteria in the biofilm community is summarized. The contribution of the biofilms for increasing antimicrobial resistance of pathogens is discussed.
THE EFFECT OF MIXING MODES ON BIOHYDROGEN YIELD AND SPATIAL PH GRADIENT AT DARK FERMENTATION OF SOLID FOOD WASTE
Authors: Tashyrev Oleksandr , Govorukha Vira , Havryliuk Olesya
Published: February 2019

Dark fermentation of multicomponent solid food waste by soil hydrogen-producing bacterial community was studied in horizontal batch reactor under different mechanical mixing modes; speed of mixing (rpm) and frequency of mixing (duration mixing and pause) were selected as target for optimization. Addition of pH indicator bromothymol blue to the culture liquid allowed to study patterns of formation of acidification zones in solid/liquid/gaseous fermentation system. It was detected that mixing speed can contribute to sustainable maintenance of optimal pH values and prevent formation of spatial pH gradient. Adjusting of mixing and pause duration resulted in significant decrease of digestion cycle and increase in volumetric hydrogen production rate. Established optimal mixing mode 24 rpm, 10 min of mixing/20 min of pause provided biohydrogen yield 123 LH2 kg-1 TSadded and reduction in the concentration of total suspended solids from 70 to 0.75 g/L in 4 days.
Viable environmental-sustainability education and training
Authors: Farrokhi Mojtaba , Nasr Isfahani Ali , Safari Ali
Published: February 2019

Based on a study of Isfahan’s Mobarake Steel Company in Iran, this article presents a framework for viable environmental-sustainability or ‘green’ education and training. The study used an admixture of qualitative and quantitative methods, with twenty managers and steel experts interviewed, and the proposed framework quantified and ratified by means of structural equation modeling. A survey helped collect quantitative data, gleaned from 440 employees and managers. The survey was tested for its external validity, while Cronbach’s alpha coefficient allowed assessing its internal consistency. The quantitative results show the need to prioritize cultivating an environmental-sustainability culture, and building a prerequisite infrastructure that both supports and is supported by the effective and efficient implementation of green education and training. To render environmental-sustainability education-and-training programs viable, their design must be grounded in situation-specific frameworks that reflect the work entailed in protecting nature. The qualitative results show that such programs must also be: co-aligned with the intentionality of human-development resources, kept up to date and synchronized with international environmental-sustainability standards. Besides the study’s qualifications, also tentatively explored are a few policymaking guidelines and future research directions.
Role assigning and taking in cloud computing
Authors: Khan Shafaq Naheed , Nicho Mathew , Takruri Haifa , Maamar Zakaria , Kamoun Faouzi
Published: February 2019

The widespread use of cloud computing (CC) has brought to the forefront information technology (IT) governance issues, rendering the lack of expertise in handling CC-based IT controls a major challenge for business enterprises and other societal organizations. In the cloud-computing context, this study identifies and ranks the determinants of role assigning and taking by IT people. The study’s integrative research links CC and IT governance to humane arrangements, as it validates and ranks role assigning and taking components through in-depth interviews with twelve IT decision-makers and forty-four Information Systems Audit and Control Association (ISACA) members, engaged as panelists in a Delphi technique implementation. The empirical results recognize skills and competencies as prioritized determinants of IT controls, while IT security, risk and compliance emerge as capabilities crucial to evaluate and manage CC service providers. Despite the study’s generalizability limitations, its findings highlight future research paths and provide practical guidelines toward the high technology of open-market IT self-governance. The latter entails the humane flows of collegial control and responsibility, as opposed to the inhumane flows of authority and power, under the sequestered technique of the bureaucratically-hierarchized IT hetero-governance.
Chinese construction worker alacrity toward mobility
Authors: Wang Xiaoli , Wang Xincheng , Liu Xiaoxue
Published: February 2019

In this study, job mobility refers to situations wherein Chinese migrant construction workers frequently change employers, plausibly a principal cause of quality defects, work-safety hazards and poor performance, within the construction-business reality. The study examines job mobility in terms of migrant construction worker willingness to change employers. Gleaned from a field survey and by using a logistic-regression model, a total of 531 questionnaires are assessed, revealing how work tenure, education, daily wages, job-hunting channels, number of workmates, and employment contracts might relate to construction worker alacrity to change jobs. Daily wages and work tenure appear to make the greatest contribution to migrant worker willingness to change jobs, while the effects of employment contract and education seem to be minimal. Despite its limitations, the study offers future research directions and policymaking recommendations toward relieving the informal termination of migrant construction workers in China.
Present Algorithms and Future Treatments for Alzheimer’s Disease
Authors: Grossberg George T. , Tong Gary , Burke Anna D. , Tariot Pierre N.
Published: February 2019

An estimated 47 million people live with Alzheimer’s disease (AD) and other forms of dementia worldwide. Although no disease-modifying treatments are currently available for AD, earlier diagnosis and proper management of the disease could have considerable impact on patient and caregiver quality of life and functioning. Drugs currently approved for AD treat the cognitive, behavioral, and functional symptoms of the disease and consist of three cholinesterase inhibitors (ChEIs) and the N-methyl-D-aspartate receptor antagonist memantine. Treatment of patients with mild to moderate AD is generally initiated with a ChEI. Patients who show progression of symptoms while on ChEI monotherapy may be switched to another ChEI and/or memantine can be added to the treatment regimen. In recent years, putative disease-modifying therapies have emerged that aim to slow the progression of AD instead of only addressing its symptoms. However, many therapies have failed in clinical trials in patients with established AD, suggesting that, once developed, disease-modifying agents may need to be deployed earlier in the course of illness. The goal of this narrative literature review is to discuss present treatment algorithms and potential future therapies in AD.
Acceptance of chronic pain. Perspectives of individuals following an Acceptance and Commitment Therapy pain management programme: An interpretative phenomenological analysis
Authors: Casey Máire-Bríd , Smart Keith M. , Hearty Conor , Lowry Damien , Doody Catherine
Published: February 2019

BACKGROUND:

There is growing evidence to support the benefits of Acceptance and Commitment Therapy for people with chronic pain. Despite this, there is limited qualitative research published in this field.

PURPOSE:

The aim of this qualitative study was to explore individuals’ perspectives related to ‘acceptance’, following participation in an eight-week multidisciplinary pain management programme (PMP) based on the psychological approach Acceptance and Commitment Therapy (ACT).

METHODS:

Twenty-six participants attended one of five focus groups. Interviews were audio-recorded and transcribed verbatim. Transcripts were imported into NVivo 11 and were analysed using an interpretative phenomenological approach.

RESULTS:

Three broad themes emerged, representing different stages of acceptance: (1) perception of acceptance as a step towards better living with chronic pain, (2) contemplation of acceptance and (3) non-acceptance. The participants in this study who appeared to have reached a point of acceptance, or were contemplating acceptance, reported positive behaviour changes that led to enhanced fulfilment and quality of life. However not all participants believed that acceptance of chronic pain was possible. Factors emerging as relevant to participants’ perceptions of acceptance included attitudes towards finding a cure, self-identity, self-efficacy, contact with personal values, feelings of loss and perceived injustice.

CONCLUSION:

This qualitative study highlights the complexity of acceptance and provides new and unique insights in relation to the views of people with chronic pain on the concept of acceptance, following participation in a multidisciplinary ACT-based PMP.
Effects of an individualised physical rehabilitation intervention enhanced by progressive muscular relaxation and visualisation exercises on psycho-emotional state in women after breast cancer surgery
Authors: Prystupa Evgen , Odynets Tetiana , Briskin Yuriy , Tyshchenko Valeria
Published: February 2019

PURPOSE:

Present study aimed to determine the effects of muscular relaxation and visualisation exercises on psycho-emotional state in women after breast cancer surgery during a 4-week individualised intervention.

METHODS:

The sample size of 51 women was chosen to perform the investigation. Women had undergone surgical treatment (radical mastectomy by Madden) for breast cancer. Participants reported anxiety and depression using the Hospital Anxiety and Depression Scale at baseline, and 4-week post-intervention. They were randomly assigned for the group A ( n = 26) that received progressive muscular relaxation and visualization exercises in addition to individualised physical rehabilitation intervention, and the group B ( n = 25) only received individualised physical rehabilitation intervention.

RESULTS:

It was found that psycho-emotional parameters steadily improved in both groups during a 4-week individualised intervention. However, based on the results of the 4-week monitoring, it has been established that using progressive muscular relaxation and visualization exercises in addition to the individualised physical intervention are more effective for reducing self-reported anxiety in women at hospital inpatient department. The post-intervention level of anxiety was statistically lower in women of the group A compared with the group B by 2.52 points ( p < 0.05).

CONCLUSIONS:

These findings showed that progressive muscular relaxation and visualization exercises were effective interventions that had a favorable impact on anxiety in women after breast cancer surgery.