نتایج جستجو برای: مارکف سوئیچینگاتورگرسیو ms ar
تعداد نتایج: 186662 فیلتر نتایج به سال:
This study investigated the characteristics of polycyclic aromatic hydrocarbons (PAHs) formed during the decomposition of benzene (C(6)H(6)) in radio-frequency (RF) plasma environments. The identification and quantification were accomplished by using a GC/MS for PAHs and an on-line Fourier transform infrared (FT-IR) spectrometer for the reactants and gaseous products. The analytical results sho...
مدلسازی چندمکانی بارش یکی از زمینههای مهم در علوم طبیعی است و مدلهای مختلف آماری برای این مهم توسعه یافتهاند که نگرشی فضایی به مدلسازی و شبیهسازی بارش روزانه دارند. مدل مارکف پنهان یکی از انواع مدلهای چندمکانی بارش روزانه است که علاوه بر شبیهسازی بارش روزانه، به بررسی توزیع فضایی و زمانی الگوهای وقوع بارش نیز میپردازد. در مطالعه حاضر با بکارگیری مدل مارکف پنهان، اقدام به مدلسازی بارش ...
Piracetam was subjected to the hydrolytic, oxidative, thermal and photolytic stress, according to ICH guideline Q1A (R2). The drug depicted degradation only in basic conditions, while it was stable to other stress conditions (acidic, neutral hydrolysis, thermal and photolytic conditions). A total of one degradation product was formed, which were separated on a BEH column employing an isocratic ...
Atypical or idiosyncratic language is a characteristic of autism spectrum disorder (ASD). In this paper, we discuss previous work identifying language errors associated with atypical language in ASD and describe a procedure for reproducing those results. We describe our data set, which consists of transcribed data from a widely used clinical diagnostic instrument (the ADOS) for children with au...
Thiol-containing compounds such as glutathione, cysteine and homocysteine react with selenite under specific conditions to form selenotrisulfides of significance in cellular systems. This study describes the synthesis and mass spectrometric characterization of selenotrisulfides of glutathione (GSH), cysteine (Cys) and homocysteine (HCys) by electrospray-MS (ESI-MS). The synthesized species are ...
BACKGROUND Multiple Sclerosis (MS) is one of the autoimmune diseases with an unknown cause. The aim of this study was to explore the link between air quality and MS relapses in patients who suffer from MS. METHODS This time-series study was conducted on patients registered at the Iranian Multiple Sclerosis Society in 2011-2012. They were randomly selected from patients lived in Tehran in the ...
Curcuma longa (turmeric) has been used in Chinese traditional medicine and Ayurvedic medicine for many years. METHODS The leaf essential oil of C. longa from southern Nigeria was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). The essential oil was screened for in vitro antibacterial, antifungal, and cytotoxic activities. The major components in C. ...
Patients —Texas, Arkansas, and Florida, 2008–2013 Anne Purfield, PhD; Snigdha Vallabhaneni, MD, MPH; Kaitlin Benedict, MPH; Shawn Lockhart, PhD; Cau Pham, PhD; Ulzii Luvsansharav, MD, PhD; Wendy Chung, MD, MSPH; Emily Hall, MPH; Jordan Peart; Neil Pascoe RN, BSN; Gary Heseltine, MD, MPH; Charlotte Wheeler, RN; Karen Brust, MD; Sharon Holmes, MPH; Prinu Gabriel, MS; Justin Groves, MPH; Craig Gil...
minutes after completing the submaximal test. Predicted VO2 was calculated from a submaximal treadmill test. An SVR exercise response coefficient (ERC) was derived and subjects were then categorized as normal response (NR) to exercise or abnormal response (AR) to exercise. Comparisons between groups were determined using ANOVA. RESULTS: The AR group indicated a significant blunted or even eleva...
An improved method to interpret triple quadrupole MS/MS experiments of complexes of large ions is presented and applied to a study of the complex formed by the proteins cytochrome c and cytochrome b5. Modeling of the activation and dissociation process shows that most of the reaction occurs near the collision cell exit where ions have the highest internal energies. Experiments at different coll...
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