139 research outputs found
Isolation and Identification of some Species of Plant Growth Promoting Rhizobacteria (PGPR) from some Bio-fertilizers عزل وتحديد بعض أنواع الرايزوبكتيريا المحفزة لنمو النبات (PGPR) من بعض المخصبات الحيوية
No full textThis study was conducted to isolate and identify some species of Plant Growth Promoting Rhizobacteria (PGPR) form three biofertilizers; Rhizobacterin, Phosphorine and Potassiomag. Specific bacterial media were used for Isolation and identification of bacterial species. The isolates were identified according to its cultural and morphological characteristics, gram staining, microscopy examination, motility and biochemical characteristics.
The results showed that the isolates which identified from Rhizobacterin were nitrogen-fixing bacteria Azotobacter chroococcum (NFBac). We also isolated and identified two other isolates; phosphate mobilizing bacteria Pseudomonas fluorescens (PSBpf) and Potas solubilizing bacteria Bacillus circulans (KSBbc) from commercial complex Phosphorine and Potassiomag, Respectively.
هدف البحث لعزل وتوصيف بعض أنواع البكتريا المحفزة لنمو النبات (PGPR) من المستحضرات التجارية التي تحتويها ،إذ أخذت ثلاث عينات من المستحضرات التجارية: رايزوباكتيرين وفوسفورين وبوتاسيوم أج.
استخدمت بيئات غذائية متخصصة لعزل وتفريق الأنواع البكتيرية ،وعرفت العزلات على أساس الخصائص المزرعية للمستعمرات والفحص المجهري وصبغ غرام واختبار الحركة بالاضافة إلى الاختبارات الكيميائية الحيوية.
أظهرت النتائج أن العزلات البكتيرية المتحصل عليها من المستحضر ريزوباكتيرين جميعها تتبع للجنس Azotobacter مثبتة للآزوت الجوي ، وللنوع Chroococcum (NFBac) Azotobacter كما تم الحصول على عزلة محلة للفوسفور تتبع للجنس Pseudomonas fluorescens (PSBpf) من المستحضر التجاري فوسفورين ، وأخرى محلة للبوتاس تتبع النوع Bacillus ciculans (KSBbc) من المستحضر التجاري بوتاسيوم أج
Psychiatric consultations and length of hospital stay
No full texthospital stay (LOS) of patients referred to psychiatric
consultation liaison (C-L) services.
Methods: The study sample prospectively included
all the referrals in 2004 to the C-L psychiatry unit
at King Khaled University Hospital in Riyadh,
Kingdom of Saudi Arabia. The following factors
were documented for each consultation: patient
demographic characteristics, dates of admission,
consultation, and discharge, and total days of stay,
medical specialty service requesting the consultation,
reason for referral given by the referring physician,and the Diagnostic and Statistical Manual of
Mental Disorders DSM-IV diagnosis, based on the
consultation interview.
Results: The total number of referrals was 264. The
LOS showed positive correlation with referral time
(p=0.0001) accounting for 22% of the variance
in LOS. Surgical ward admission and diagnosis of
delirium predicted longer LOS, while obstetric/
gynecology ward admission, diagnosis of anxiety,
and diagnosis of bipolar affective disorder predicted
shorter LOS.
Conclusion: The direct correlation between the timing
of referral and LOS reinforces that it is important for
medical professionals to identify and detect patients
who require early psychiatric intervention. Ways of
detecting high-risk patients are discussed.Corresponding Author:
Dr. Yaser R. Alhuthail,
Assistant Professor and Consultant, Consultation-Liaison Psychiatry and Psychosomatic Medicine, Department of Psychiatry, College of Medicine and King Khaled University Hospital, Riyadh, Saudi Arabia. Email: [email protected]
Transferability of Privacy-related Behaviours to Shared Smart Home Assistant Devices
No full textSmart assistant devices (such as Amazon Echo or Google Home) have notable differences to more conventional consumer computing devices. They can be used through voice control as well as physical interaction, and are often positioned as a shared device within a home environment. We conduct an exploratory online survey with 97 UK-based users of smart assistant devices, to examine the differences users perceive between smart assistants and more familiar devices (such as smartphones and computers), in terms of shared use dynamics, privacy-related behaviours, and privacy concerns. The survey explores typical usage, setup practices, perceived ease of use and control, privacy concerns for multiple users, shared usage of existing devices, and smart assistant privacy control usage. Approximately half of participants were unsure of where to access privacy settings on their smart home assistants; basic device controls and informal privacy controls saw general use. Those who had used privacy controls with previous devices used at least one smart assistant privacy control. Results have implications for supporting transferable privacy behaviours from computing devices to smart home devices, and improving privacy-related design for smart assistants.Accepted Author ManuscriptOrganisation & Governanc
Empirical model for frequency content estimation of strong ground motion records of Iran
No full textThis paper presents a new empirical model to predict the mean period (Tm) as a frequency-content parameter of earthquake record using the strong ground motions recorded in Iran during 1975–2019. An updated earthquake databank containing 2281 horizontal acceleration records was employed to develop the empirical model through a systematic fitting procedure. A simple functional form for the model was found as a function of epicentral distance (R), moment magnitude (Mw), and the shear wave velocity averaged at the top 30 m of the recording sites (Vs30). The proposed model is compared with three existing predictive models and the results are discussed in terms of magnitude, source-to-site, and site dependencies.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Geo-engineerin
United States Citizens Detained as Enemy Combatants : The Right to Counsel as a Matter of Ethics
No full textThe Supreme Court will decide as a matter of law whether an American citizen detained as an enemy combatant has the right to counsel. The author argues that as a matter of ethics, the answer is clear - there is a right to counsel. In this Article, the author analyzes the cases regarding Jose Padilla and Yaser Esam Hamdi discusses ABA Model Rule 4.2, and its application, and proposes an amendment to Rule 4.2\u27s Comment
Shaking Table Test on Mitigation of Liquefaction-Induced Tunnel Uplift by Helical Pile
No full textThe tunnels located in the shallow depths of loose saturated sand are significantly prone to liquefaction-induced uplift. Research works are, therefore, in progress to propose efficient techniques for mitigating uplift. In this study, 1 g physical modeling was used to assess the performance of helical piles for decreasing liquefaction-induced uplift. The effects of pile length, number of pile helixes, and the pile spacing in plan view were investigated. The uplift mechanism of the tunnel and helical pile system was also analyzed. The results demonstrate that the penetration of the helical piles into the dense layer underlying the superficial liquefiable sand has decreased tunnel uplift significantly. However, excessive close pile spacing along the tunnel resulted in shear surface interference, and the efficiency of the excessive number of helical piles decreased significantly. The detailed view of the uplift mechanism showed that utilization of the piles extended the transition phase of uplift during shaking. Helical piles can efficiently restrict the possibility of rapid uplift of the tunnel and shorten the duration of the primary uplift phase.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Geo-engineerin
Cash for the Register? Capturing Rationales of Early COVID-19 Domain Registrations at Internet-scale
No full textThe COVID-19 pandemic introduced novel incentives for adversaries to exploit the state of turmoil. As we have witnessed with the increase in for instance phishing attacks and domain name registrations piggybacking the COVID-19 brand name. In this paper, we perform an analysis at Internet-scale of COVID-19 domain name registrations during the early stages of the virus’ spread, and investigate the rationales behind them. We leverage the DomainTools COVID-19 Threat List and additional measurements to analyze over 150,000 domains registered between January 1st 2020 and May 1st 2020. We identify two key rationales for covid-related domain registrations. Online marketing, by either redirecting traffic or hosting a commercial service on the domain, and domain parking, by registering domains containing popular COVID-19 keywords, presumably anticipating a profit when reselling the domain later on. We also highlight three public policy take-aways that can counteract this domain registration behavior.Electrical Engineering, Mathematics and Computer ScienceOrganisation & Governanc
Chemical Sensor Properties and Mathematical Modeling of Graphene Oxide Langmuir-Blodgett Thin Films
No full textGraphene oxide (GO) Langmuir-Blodgett (LB) thin films were prepared to use as chemical sensor element. The properties of GO LB thin film layers were characterized via Quartz crystal microbalance (QCM) method. Selectivity of the sensor to various organic vapors was investigated by surface plasmon resonance (SPR) and QCM techniques. Fick's equations were used for calculating the diffusion coefficients (D) values of organic vapors. It was observed that chemical gas sensing characteristics of the GO film sensor shows a large response to some hazardous organic vapors. Then, by using experimental measurements that obtained during this process, NARX-ANN-based mathematical model of frequency shift of the quartz resonator was designed. The results of NARX-ANN verify the efficiency of the designed model. © 2001-2012 IEEE.2018/MF002 British Association for Psychopharmacology, BAPManuscript received April 12, 2019; revised June 19, 2019; accepted June 29, 2019. Date of publication July 2, 2019; date of current version September 18, 2019. This work was supported in part by the BAP: Research Foundation of Usak University under Project 2018/MF002 and in part by the UBATAM: Usak University, Scientific Analysis Technological Application and Research Center. The associate editor coordinating the review of this paper and approving it for publication was Dr. Chang-Soo Kim. (Corresponding author: Yaser Acikbas.) K. Büyükkabasakal is with the Department of Electric-Electronic Engineering, Faculty of Engineering, Usak University, 64200 Us¸ak, Turkey (e-mail: [email protected])
A Controversial Orthodoxy:Al-Ghazali’s Revival of the Religious Sciences
No full textAs part of NTT JTSR’s series on Key Texts, the present article discusses the magnum opus of the medieval Muslim scholar Abu Hamid al-Ghazali, Iḥyāʾ ʿUlūm al-Dīn (Revival of the Religious Sciences): its genre, the main aspects of the critique it generated and its relevance to contemporary Muslim debates. This work is still celebrated in Muslim traditionalism as a masterpiece on Islamic spiritual sublimity and self-purification, based on scriptural-traditional references and the mystic experience of the author. The Iḥyāʾ inspired many authors with commentaries, annotations, epitomes and explanations. Yet it stirred no less critique among religious scholars and conservative currents as a work indulging religious novelties as well as spreading inauthentic traditions and unorthodox practices among Muslims. The controversy about this work reflects an intra-Islamic antagonism towards the notion of orthodoxy, and what it entails for the Muslim faith and praxis
An optical vapor sensor based on amphiphilic block copolymer langmuir-blodgett films
No full textAmphiphilic block copolymers containing poly [N,N-(dimethylamino)ethyl methacrylate] block was used as a chemical sensor material in this paper. The amphiphilic block copolymer Langmuir-Blodgett (LB) thin films were prepared onto a gold-coated glass, quartz crystal and quartz glass substrates to fabricate a thin film chemical sensor element. Atomic force microscopy, quartz crystal microbalance, UV-visible spectroscopy, and surface plasmon resonance (SPR) techniques were used to characterize all the copolymer LB thin films. The mass deposited onto a quartz crystal and the frequency shifts per layer were found to be 4258.01 ng per layer (16.06 ng mm-2) and 188.07 Hz per layer, respectively. Using Winspall software, all experimental SPR data were fitted and the film thickness of this the copolymer LB thin film can be evaluated. The refractive index and thickness per monolayer of LB films were determined as 1.63±0.02 nm and 1.46±0.07 nm, respectively. Amphiphilic block copolymer LB thin film chemical sensor element was exposed to dichloromethane, chloroform, benzene, and toluene vapors. The SPR kinetic measurements showed that the photodetector response change, ? Irf for saturated dichloromethane vapor is much larger than the other vapors with the ? Irf value of 0.081 au and with 3.5-s recovery time/4.5-s response time. It can be proposed that amphiphilic block copolymer LB thin film chemical sensor element has a good sensitivity and selectivity for saturated dichloromethane vapor. © 2001-2012 IEEE.113Z584Manuscript received April 19, 2018; accepted May 2, 2018. Date of publication May 7, 2018; date of current version June 12, 2018. This work was supported by The Scientific and Technical Research Council of Turkey under Project 113Z584. The associate editor coordinating the review of this paper and approving it for publication was Dr. Qiang Wu. (Corresponding author: Yaser Acikbas.) Y. Acikbas is with the Department of Material Science and Nanotechnology Engineering, Faculty of Engineering, Us¸ak University, 64200 Us¸ak, Turkey (e-mail: [email protected])
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