bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigation of the relationship between high school students’ academic procrastination behaviors and their use of social media<p>Lise öğrencilerinin akademik erteleme davranışları ve sosyal medya kullanımları arasındaki ilişkilerin incelenmesi
Authors: Gürültü Ercan , Deniz Levent 
Published: March 2017

The main aim of this study is to investigate the relationship between high school students’ academic procrastination and their use of social media. The sample of this study consisted of 473 students From 6 different schools of Eyüp district in İstanbul in 2014-2015 academic year. To indentify students’ academic procrastination behaviors, ‘Academic Procrastination Scale’, developed by Çakıcı (2003), was applied. A twelve item questionnare, which was developed by researchers, was used in order to determine students ‘personal information and their use of social media. The results show that high school students’ academic procrastination behavior levels are upper medium and they use social media very often. Male students show more academic procrastination behaviors in terms of gender and Anatolian high school students present more academic procrastination behaviors in terms of school type. It is also concluded that high school students academic procrastination and use of socail media differs in terms of clasroom level, the use of socail media, frequency of occurrence, avarage time for daily use etc. In conclusion, high school students who use social media for a longer time and more often show higher level of academic procrastination behaviors. ÖzetBu araştırmanın genel amacı lise öğrencilerinin akademik erteleme davranışları ve sosyal medya kullanımları arasındaki ilişkilerin incelenmesidir.Araştırmanın örneklemini 2014-2015 eğitim-öğretim yılında İstanbul ili Eyüp ilçesindeki 6 farklı okulda öğrenim gören 473 öğrenci oluşturmuştur. Öğrencilerin akademik erteleme davranışlarını belirlemek için Çakıcı (2003) tarafından geliştirilen “Akademik Erteleme Ölçeği” kullanılmıştır. Öğrencilerin demografik bilgilerini ve sosyal medya kullanım durumlarını saptamak için ise araştırmacılar tarafından düzenlenen 12 sorudan oluşan bir anket kullanılmıştır. Araştırmada genel olarak lise öğrencilerinin akademik erteleme davranışı seviyelerinin orta seviyenin üzerinde olduğu ve sosyal medyayı yoğun olarak kullandığı verilerine ulaşılmıştır. Cinsiyet açısından yapılan karşılaştırmalarda erkek öğrencilerin, okul türü açısından yapılan karşılaştırmalarda ise Anadolu Lisesi’nde okuyan öğrencilerin daha fazla akademik erteleme davranışı gösterdiği bulgularına ulaşılmıştır. Ayrıca lise öğrencilerinin akademik erteleme davranışları ve sosyal medya kullanımlarının sınıf seviyesi, sosyal medya kullanım yılı, kullanım sıklığı, günlük ortalama kullanım süresi gibi değişkenler açısından farklılaştığı belirlenmiştir. Sonuçlar genel olarak, sosyal medyayı daha uzun süredir ve daha sık kullanan öğrencilerin akademik erteleme davranışlarının daha yüksek olduğunu göstermektedir.
De novo disruption of promoter and exon 1 of STAR gene reveals essential role for gonadal development
Authors: Piya Anil , Kaur Jasmeet , Rice Alan M , Bose Himangshu S 
Published: March 2017

Summary
Cholesterol transport into the mitochondria is required for synthesis of the first steroid, pregnenolone. Cholesterol is transported by the steroidogenic acute regulatory protein (STAR), which acts at the outer mitochondrial membrane prior to its import. Mutations in the STAR protein result in lipoid congenital adrenal hyperplasia (CAH). Although the STAR protein consists of seven exons, biochemical analysis in nonsteroidogenic COS-1 cells showed that the first two were not essential for pregnenolone synthesis. Here, we present a patient with ambiguous genitalia, salt-lossing crisis within two weeks after birth and low cortisol levels. Sequence analysis of the STAR, including the exon–intron boundaries, showed the complete deletion of exon 1 as well as more than 50 nucleotides upstream of STAR promoter. Mitochondrial protein import with the translated protein through synthesis cassette of the mutant STAR lacking exon 1 showed protein translation, but it is less likely to have synthesized without a promoter in our patient. Thus, a full-length STAR gene is necessary for physiological mitochondrial cholesterol transport in vivo.

Learning points:

STAR exon 1 deletion caused lipoid CAH.

Exon 1 substitution does not affect biochemical activity.

StAR promoter is responsible for gonadal development.
Longitudinal Predictors of Synthetic Cannabinoid Use in Adolescents
Authors: Ninnemann Andrew L. , Jeong Choi Hye , Stuart Gregory L. , Temple Jeff R. 
Published: March 2017

BACKGROUND:
Synthetic cannabinoids (SCs) are a large, heterogeneous group of chemicals that are structurally similar to δ-9-tetrahydrocannabinol. Many SCs are high-efficacy full agonists of the CB1 and/or CB2 cannabinoid receptors, resulting in a potent group of chemicals with a variety of negative health effects, including death. SCs are available to adolescents at convenience stores and smoke shops and on the Internet. However, little is known about the risk factors that contribute to eventual use of SCs in adolescents, and no research has examined the psychiatric, personality, and substance-use risk factors that prospectively predict SC use. On the basis of extant cross-sectional research, we hypothesized that anxiety, depression, impulsivity, and marijuana use would prospectively predict eventual SC use.

METHODS:
Data were collected across 2 time points 12 months apart on adolescents attending multiple public high schools in southeast Texas (n = 964).

RESULTS:
Path analysis indicated that depressive symptoms, marijuana use, alcohol use, and SC use at baseline were predictive of SC use at 1-year follow-up, whereas anxiety symptoms and impulsivity were not. In addition, SC use at baseline was not predictive of marijuana use at the 1-year follow-up. Females and African Americans were less likely to use SCs than males or those of other ethnicities.

CONCLUSIONS:
SC-use prevention programming should consider depressive symptoms, marijuana use, and alcohol use as risk factors for SC use. Of particular significance, traditional marijuana use was predictive of subsequent SC use, but SC use was not predictive of later marijuana use.
Detention of Immigrant Children
Authors: Linton Julie M. , Griffin Marsha , Shapiro Alan J. ,   COUNCIL ON COMMUNITY PEDIATRICS, Chilton Lance A. , Flanagan Patricia J. , Dilley Kimberley J. , Duffee James H. , Green Andrea E. , Gutierrez J. Raul , Keane Virginia A. , Krugman Scott D. , McKelvey Carla D. , Nelson Jacqueline L. 
Published: March 2017

This Policy Statement was reaffirmed November 2022.
Immigrant children seeking safe haven in the United States, whether arriving unaccompanied or in family units, face a complicated evaluation and legal process from the point of arrival through permanent resettlement in communities. The conditions in which children are detained and the support services that are available to them are of great concern to pediatricians and other advocates for children. In accordance with internationally accepted rights of the child, immigrant and refugee children should be treated with dignity and respect and should not be exposed to conditions that may harm or traumatize them. The Department of Homeland Security facilities do not meet the basic standards for the care of children in residential settings. The recommendations in this statement call for limited exposure of any child to current Department of Homeland Security facilities (ie, Customs and Border Protection and Immigration and Customs Enforcement facilities) and for longitudinal evaluation of the health consequences of detention of immigrant children in the United States. From the moment children are in the custody of the United States, they deserve health care that meets guideline-based standards, treatment that mitigates harm or traumatization, and services that support their health and well-being. This policy statement also provides specific recommendations regarding postrelease services once a child is released into communities across the country, including a coordinated system that facilitates access to a medical home and consistent access to education, child care, interpretation services, and legal services.
Effect of Foliar Application of Micronutrients on Plant Growth and Seed Germination of Four Okra Cultivars
Authors: MOHAMMADI Ghadir , KHAH Ebrahim M. , PETROPOULOS Spyridon Alexandros , CHACHALIS Dimosthenis B. 
Published: March 2017

In the present study, the effect of foliar application of micronutrient fertilizers on okra plants was examined. Four okra cultivars (â€˜Boyiatiouâ€™, â€˜Veloudoâ€™, â€˜Clemsonâ€™ and â€˜Pylaiasâ€™) were sprayed weekly throughout the duration of the cultivation with two commercial micronutrient fertilizers (F1 and F2) [e.g. M1= control (0 ml); M2= 40 ml (20 ml of each fertilizer); M3 = 80 ml (40 ml of each fertilizer). From the results of the present study, it was observed that plant height of â€˜Boyiatiouâ€™ and â€˜Pylaiasâ€™ was increased by application of M2 whereas plant height of â€˜Clemsonâ€™ and â€˜Veloudoâ€™ was either unaffected or reduced. Flower induction increased at both micronutrient levels (M2 and M3) only in â€˜Pylaiasâ€™. Pod set was higher in treatment M3 in â€˜Veloudoâ€™ and â€˜Pylaiasâ€™ and resulted in higher seed yield.Â Pod length and diameter were not affected by micronutrient application, as well as 100-seed mean weight and moisture content; however the number of seeds per pod in â€˜Pylaiasâ€™ was significantly lower in M2 and M3 than in M1, whereas the percent seed germination of all cultivars was higher following micronutrient application. Germination differed between the control and the micronutrient treatments at all times of harvest and plant parts. In conclusion, the main value of foliar application of micronutrients was to increase germination percentage and reduce hardseedness, especially for cv. â€˜Veloudoâ€™, since the occurrence of hard seeds in susceptible cultivars reduces germination, and therefore seed quality. In some cultivars (â€˜Pylaiasâ€™ and â€˜Veloudoâ€™ here) micronutrients may also increase seed yield by increasing pod set.
Quantifying Some Physiological and Productivity Indices of Canola (<i style='mso-bidi-font-style:normal'>Brassica napus</i> L.) Crop under an Arid Environment
Authors: NOREEN Sibgha , NOOR Shakeela , AHMAD Shakeel , BIBI Fehmeeda , HASANUZZAMAN Mirza 
Published: March 2017

Canola (Brassica napus L.) crop ranks third after soybean and palm among oilseed crops for production of vegetable oil and meal for human and livestock, respectively around the globe. The cultivars of canola crop vary greatly in their yield potential in response to eco-edaphic factors under different production environments. Therefore, research studies were undertaken to evaluate eight cultivars of canola crop â€˜Shiraleeâ€™, â€˜Dunkledâ€™, â€˜Bulbul-98â€™, â€˜Ac-Excelâ€™, â€˜Cycloneâ€™, â€˜Rainbowâ€™, â€˜DGLâ€™ and â€˜Faisal Canolaâ€™ for quantifying some physiological and productivity indicesÂ under normal growing conditions. The results showed that various cultivars of canola differed significantly amongst themselves with respect to biological yield, chlorophyll content, protein content, nutrient composition and components of seed yield. Among the cultivars, cvs. â€˜Bulbal-98â€™ and â€˜Rainbowâ€™ produced maximum biological yield and seed yield,Â respectively, Furthermore, maximum yield harvested from cv. â€˜Rainbowâ€™ was associated with higher total seed weight plant-1, while cv. â€˜Faisal Canolaâ€™ maintained higher chlorophyll content than other ones. Cultivar â€˜Dunkledâ€™ contained higher K+ nutrient by 21.13 mg g-1 in leaf tissues compared to minimum (9.73 mg g-1) in â€˜DGLâ€™ cultivar. The higher amount of Na+ content (12.16 mg g-1) was determined in cv. â€˜AC Excelâ€™. Cultivar â€˜Rainbowâ€™ maintained higher photosystem (II) activity and had greater partitioning ability of photo-assimilates in the seed tissues. Of various chlorophyll fluorescence parameters, quantum yield of photosystem II and electron transport performance index could be used as a selection criterion for breeding of canola cultivars.
Efficient In Vitro Callus Induction and Plant Regeneration Protocol for Different Polish Tomato Cultivars
Authors: GERSZBERG Aneta , HNATUSZKO-KONKA Katarzyna , KOWALCZYK Tomasz , KONONOWICZ Andrzej K. 
Published: March 2017

The major goal of this research was to establish a stable regeneration system for tomato cultivars in order to lay the foundations for the future genetic transformation of the tomato. The regeneration ability of two kinds of explants (cotyledons and hypocotyl segments) was compared for three Polish cultivars of the tomato (Solanum lycopersicum). Explants were cultured on 10 different regeneration media (basal mediums MS or B5, and with a combination of 6-benzylaminopurine (BAP) and indole-3-acetic acid (IAA). It was found that the ability to regenerate was substantially dependent on the cultivars, as well as on the kind of explant. The best explants for inducing shoot regeneration were cotyledons, followed by hypocotyls. It was noticed that the best formulation of the medium for this regeneration from the two types of explants used in this study, is MS with 2 mg/L BA and 0.1 mg/L IAA.Â Tomato shoots were transferred to a Â½ MS medium and Â½ MS complemented with 0.1 mg/L IAA for rooting and all of them responded positively to the rooting medium.
Detection of Hydroxyl and Perhydroxyl Radical Generation from Bleaching Agents with Nuclear Magnetic Resonance Spectroscopy
Authors: Sharma Himanshu , Sharma Divya S 
Published: March 2017

Objective: Children/adolescent's orodental structures are different in anatomy and physiology from that of adults, therefore require special attention for bleaching with oxidative materials. Hydroxyl radical (OH.) generation from bleaching agents has been considered directly related to both its clinical efficacy and hazardous effect on orodental structures. Nonetheless bleaching agents, indirectly releasing hydrogen peroxide (H2O2), are considered safer yet clinically efficient. Apart from OH., perhydroxyl radicals (HO2.) too, were detected in bleaching chemistry but not yet in dentistry. Therefore, the study aims to detect the OH. and HO2. from bleaching agents with their relative integral value (RIV) using 31P nuclear magnetic resonance (31PNMR) spectroscope. Study design: Radicals were generated with UV light in 30% H2O2, 35% carbamide peroxide (CP), sodium perborate tetrahydrate (SPT) and; neutral and alkaline 30% H2O2. Radicals were spin-trapped with DIPPMPO in NMR tubes for each test agents as a function of time (0, 1, 2, 3min) at their original pH. Peaks were detected for OH. and HO2. on NMR spectrograph. RIV were read and compared for individual radicals detected. Results: Only OH. were detected from acidic and neutral bleaching agent (30% acidic and neutral H2O2, 35%CP); both HO2. and OH. from 30% alkaline H2O2; while only HO2. from more alkaline SPT. RIV for OH. was maximum at 1min irradiation of acidic 30%H2O2 and 35%CP and minimum at 1min irradiation of neutral 30%H2O2. RIV for HO2.was maximum at 0min irradiation of alkaline 30%H2O2 and minimum at 2min irradiation of SPT. Conclusion: The bleaching agents having pH- neutral and acidic were always associated with OH.; weak alkaline with both OH. and HO2.; and strong alkaline with HO2. only. It is recommended to check the pH of the bleaching agents and if found acidic, should be made alkaline to minimize oxidative damage to enamel itself and then to pulp/periodontal tissues.
Abbreviations:
H2O2: hydrogen peroxide
CP: carbamide peroxide
SP: sodium perborate
SPT: sodium perborate tetrahydrate
ROS: reactive oxygen species
31PNMR: 31P nuclear magnetic resonance spectroscope
RIV: relative integral value
OH2.: hydroxyl radical
HO2 .: perhydroxyl radical
O2 .: super oxide radical
DIPPMPO: 5-(Diisopropoxyphosphoryl)-5-methyl-1-pyrroline-N-oxide
DEPMPO: 5-diethoxyphosphoryl-5-methyl-1-pyrroline-n-oxide
DMPO: 5,5-dimethyl-1-pyrroline-N-oxide
D2O: heavy water
EDTA: ethylene diamine tetra acetic acid
Информационные технологии в развитии музейного маркетинга
Authors: Клячина Анжелла Равиловна 
Published: March 2017

<p>Рассматриваются социокультурные функции музеев, формы и методы работы с посетителями. Анализируются некоторые вопросы организации музейного маркетинга. </p>
Fault detection using neural network
Authors: Namigo Elistia Liza 
Published: March 2017

<p class="Abstract">Fault detection technique using neural networks have been successfully applied to a seismic data volume. This technique is basically creating a volume that highlights faults by combining the information from several fault indicators attributes (i.e. similarity, curvature and energy) into fault occurrence probability. This is performed by training a neural network on two sets of attributes extracted at sample locations picked manually - one set represents the fault class and the other represents the non-fault class. The next step is to apply the trained artificial neural network on the seismic data. Result indicates that faults are more highlighted and have better continuity since the surrounding noise are mostly suppressed.</p>
Leveraging on Diverse Workforce - Accommodations and Accessibility for All
Authors: Seet Alfred 
Published: March 2017

Abstract
In early 2016, Shell embarked on a program to improve workplace accessibility for all employees, including but not limited to people with disabilities (PWD). This is part of an overall strategy for promoting diversity and inclusiveness in the workplace. The scope of the initial phase of the Accessibility project focuses on building an integrated end-to-end process in Shell for delivering reasonable adjustments to qualified employees.
A key element of the new end process is the setting up of an Accessibility Centre within Shell, manned by a trained team of advisers who will be the single interface point for employees and coordinate the process from end-to-end. Approvals for requests will be largely managed by the Centre, following a trust-based model and only escalated to subject matter experts if needed. A pilot for the new process in 2 major Shell locations was launched in October 2016 and will be complete in 6 months. Preliminary results collected from the pilot suggest that the new process is well received by employees and delivers adjustments quicker.
Sensing-Based Technology Advances for Enhanced Deployment of Oil Spill Response Resources
Authors: Coolbaugh T. S. , Chopra A. , Varghese G. 
Published: March 2017

Abstract
Objectives/Scope: The paper examines how oil spill Surveillance, Modelling and Visualization capabilities have evolved over the years and how synergies between these technologies aspire to answer some of the pressing questions on "Situational Awareness" for operational decision making during oil spill events.
Methods, Procedures, Process: Techniques exist that provide information about a slick's location, and potentially, information can be gathered about characteristics of a slick such as thickness. This is important in order to maximize the encounter rate of spill response tools, since the best equipment will do little if it is not located in or able to be deployed at the location of greatest concentration, whether it is to be collected, burned, or dispersed. Used together, these technologies ensure that resource intensive airborne and ground based spill response tools and personnel can be deployed effectively and timely manner to achieve optimum response performance.
Results, Observations, Conclusions: Major oil spills may involve multiple intervention and response strategies. Although much of the focus has been on mechanical containment and recovery, in-situ burn and dispersants, there have been significant developments with respect to sensing technologies that may allow for better discrimination of the details of a surface slick. This is important since effective response relies on the ability to locate the majority of a spill. It is usually the case that most of the slick volume resides in a small area and by identifying the areas of thicker oil, it is possible to deploy response tools in a more effective manner. Therefore, it is important to have good information about the size of a slick, type of spilled material, location and trajectory. Without this it would be difficult to know how much response equipment to plan for and where to position it. In addition, it is expected that the oil will be subject to natural weathering processes such as evaporation, dissolution, dispersion, and emulsification, all of which may diminish response tool effectiveness. Slicks will naturally spread and in locations in the open ocean, currents and winds will serve to spread the oil farther, making it less continuous and thinner.
Novel/Additive Information: Technological advancement in oil spill response operations continues to occur constantly, despite a common misconception that there has been little or no change since the first major offshore oil spill happened in the 1960s. Technological advancements will be discussed with a focus on operational readiness level and existing knowledge gaps for future improvements.
Environmentally Sustainable and Cost Effective Offshore Disposal of Drilling Wastes: A Review of Current Practice in Malaysia
Authors: Ling Lee Hooi , Lye Koh Hock , Shern Lee Seng 
Published: March 2017

Abstract
Oil and gas exploration in deep water is capital intensive. Economic viability and sustainability of offshore exploration in a financial environment strained by low prices of crude oil demands efficient cost rationalization in all aspects of operations, including well drilling activity. Well drilling generates drill cuttings which may be disposed either onshore or offshore. Onshore disposal is logistically complicated and is not cost-effective. More cost-effective offshore disposal of drill cuttings should therefore be encouraged if it is environmentally sustainable. This model simulation research is conducted to assess the appropriateness of offshore disposal of drilling wastes in order to protect the marine environment. A central concern in drill-cuttings offshore disposal is over the formation of cuttings pile formations on the seabed and the suspended solids created in the water column that might pose adverse impact to corals and other sensitive marine ecosystems. Model simulations indicate that offshore disposal of drill wastes will not pose significant adverse impact to the marine environment and ecosystems at the drilling rates currently practised in Malaysian oil and gas exploration drilling. It is hoped that this review would provide useful technical information and scientific insights regarding the safe disposal of drilling wastes into the coastal environment currently practiced in Malaysia oil and gas industry.