نتایج جستجو برای: pd substitution

تعداد نتایج: 114443  

2009
Suisheng Tang Zhuo Zhang Kavitha Gopalakrishnan Eng-King Tan See-Kiong Ng

Parkinson's disease (PD) is the second most common neurodegenerative disorder affecting millions of people. Both environmental and genetic factors play important roles in its causation and development. Genetic analysis has shown that over 100 genes are correlated with the etiology and pathology of PD. However, accessing genetic information in a consistent and fruitful way is not an easy task. T...

2005
Kelly J Perkins William F Carey C Phillip Morris

Metachromatic leukodystrophy (MLD) is an autosomal recessive lysosomal storage disorder caused by a deficiency of arylsulphatase A (ARSA) (EC 3.1.6.8). MLD involves progressive demyelination, resulting in a variety of neurological symptoms varying in severity (Kolodny and Fluharty, 1995). The ARSA gene consists of eight exons encoding the 507 amino acid enzyme (Stein et al, 1989). It is transcr...

2008
Martina Bauer Larissa Marschaus Muriel Reuff Verena Besche Simone Sartorius-Neef Felicitas Pfeifer

Transcription of the genomic region involved in gas vesicle formation in Halobacterium salinarum (p-vac) and Haloferax mediterranei (mc-vac) is driven by two divergent promoters, P(A) and P(D), separated by only 35 nt. Both promoters are activated by the transcription activator GvpE which in the case of P(mcA) requires a 20-nt sequence (UAS) consisting of two conserved 8-nt sequence portions lo...

Journal: :Journal of the American Chemical Society 2004
Bradley A Steinhoff Ilia A Guzei Shannon S Stahl

The Pd(OAc)(2)/pyridine catalyst system is one of the most convenient and versatile catalyst systems for selective aerobic oxidation of organic substrates. This report describes the catalytic mechanism of Pd(OAc)(2)/pyridine-mediated oxidation of benzyl alcohol, which has been studied by gas-uptake kinetic methods and (1)H NMR spectroscopy. The data reveal that turnover-limiting substrate oxida...

2015
Jishi Chen Liren Liu Linhong Weng Yuejian Lin Lingwen Liao Chengming Wang Jinlong Yang Zhikun Wu

Tiara-like thiolated group 10 transition metal (Ni, Pd, Pt) nanoclusters have attracted extensive interest due to their fundamental scientific significance and potential application in a number of fields. However, the properties (e.g. the absorption) evolution with the ring size's increase was not investigated so far to our best knowledge, due to the challenge of obtaining a series of nanoclust...

Journal: :Journal of medical genetics 2004
P J Lockhart S Lincoln M Hulihan J Kachergus K Wilkes G Bisceglio D C Mash M J Farrer

P arkinson’s disease (PD; OMIM #168600) is a common neurodegenerative disorder characterised by bradykinesia, resting tremor, muscle rigidity, and postural instability. The pathological features include loss of dopaminergic neurones, in particular within the substantia nigra pars compacta, and eosinophilic, cytoplasmic inclusions termed Lewy bodies. Although rare, familial forms of parkinsonism...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده عمران 1391

چگالی چیدمان (pd) اختلاط سنگدانه ها یکی از پارامترهای مهم و تعیین کننده در طرح اختلاط بتن می باشد. هر چه مقدار pd اختلاط سنگدانه ها بیشتر باشد، مقدار فضای خالی کمتری در بین سنگدانه ها وجود دارد و لذا به مقدار سیمان کمتری جهت پر نمودن فضاهای خالی احتیاج می باشد. در صورتی که مقدار خمیر سیمان در بتن ثابت باشد، افزایش میزان pd، منجر به افزایش کارایی در یک نسبت آب به سیمان (w/c) ثابت می شود و هم چنی...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1391

در این پروژه، روش سنتز تعدادی از کمپلکس های تک هسته ای اورتوپالادیت حاوی لیگاندهای تک دندانه و دو دندانه با استفاده از کمپلکس دو هسته ای تری فنیل فسفیت اولیه ارایه شده است. طی این مطالعه، کمپلکس دو هسته ای اورتوپالادیت 1)) [pd(?-cl)p(oph)2(oc6h4)]2 از رفلاکس pdcl2 با pdcl2[p(oph)3]2 در حلال تولوئن به مدت پنج ساعت بدست آمده است. از واکنش این کمپلکس با لیگاندهای تک دندانه تری فنیل فسفین (pph3)، 2...

Journal: :Revista medica de Chile 2011
Angela Delucchi Claudia Alarcón Francisco Cano Ana María Lillo José Luis Guerrero Marta Azócar Carolina Abarzúa María José Muñoz Germán Iñiguez

BACKGROUND Hypovitaminosis D has a high prevalence among patients with chronic kidney disease (CKD). AIM To determine the prevalence of 25 hydroxy vitamin D (25(OH) D) insufficiency and deficiency in pediatric patients on dialysis and kidney transplantation. MATERIAL AND METHODS Serum calcium and phosphorus, parathormone (PTH), alkaline phosphatases and 25 (OH)D were measured in 13 children...

Ehsan Lajmiri, Mohammadreza Alijani, Moosa Javdani, Rasool Rahimi Junqani,

Parkinson’s Disease (PD) is a chronic, progressive, neurodegenerative disorder with motor and non-motor signs and symptoms. PD is caused by idiopathic degeneration of dopamine-producing cells in the substantia nigra, located in the midbrain. Recently, Trace elements have been recognized to play an important role in the development of Parkinson’s disease (PD). The aim of this review ...

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