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Pd solutions

Paul C Lou, Sandeep Kumar
Spintronics is an analogue to electronics where spin of the electron rather than its charge is functionally controlled for devices. The generation and detection of spin current without ferromagnetic or exotic/scarce materials are two the biggest challenges for spintronics devices. In this study, we report a solution to the two problems of spin current generation and detection in Si. Using non-local measurement, we experimentally demonstrate the generation of helical dissipationless spin current using spin-Hall effect...
February 23, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Rebecca L Achey, Erin Yamamoto, Daniel Sexton, Christine Hammer, Bryan S Lee, Robert S Butler, Nicolas R Thompson, Sean J Nagel, Andre G Machado, Darlene A Lobel
OBJECTIVE Deep brain stimulation (DBS) is an effective therapy for movement disorders such as idiopathic Parkinson's disease (PD) and essential tremor (ET). However, some patients who demonstrate benefit on objective motor function tests do not experience postoperative improvement in depression or anxiety, 2 important components of quality of life (QOL). Thus, to examine other possible explanations for the lack of a post-DBS correlation between improved objective motor function and decreased depression or anxiety, the authors investigated whether patient perceptions of motor symptom severity might contribute to disease-associated depression and anxiety...
February 23, 2018: Journal of Neurosurgery
Yanxia Ma, Lisi Yin, Guojian Cao, Qingli Huang, Maoshuai He, Wenxian Wei, Hong Zhao, Dongen Zhang, Mingyan Wang, Tao Yang
Exploration of highly efficient electrocatalysts is significantly urgent for the extensive adoption of the fuel cells. Because of their high activity and super stability, Pt-Pd bimetal nanocrystals have been widely recognized as one class of promising electrocatalysts for oxygen reduction. This article presents the synthesis of popcorn-shaped Pt-Pd bimetal nanoparticles with a wide composition range through a facile hydrothermal strategy. The hollow-centered nanoparticles are surrounded by several petals and concave surfaces...
February 22, 2018: Small
Younan Xia, Legna Figueroa-Cosme, Kyle D Gilroy, Tung-Han Yang, Madeline Vara, Jinho Park, Shixiong Bao, Anderson G M da Silva
Shape-controlled synthesis of colloidal metal nanocrystals has traditionally relied on the use of an approach that involves the reduction of a metal precursor by a single reductant. Once the concentration of the atoms surpasses supersaturation, they will undergo homogeneous nucleation to generate nuclei and then seeds, followed by further growth into nanocrystals. In general, it is a grand challenge to optimize such an approach because the kinetic requirement for nucleation tends to be drastically different from what is needed for guiding the growth process...
February 19, 2018: Chemistry: a European Journal
M Mañes-Sevilla, M B Marzal-Alfaro, R Romero Jiménez, A Herranz-Alonso, M N Sanchez Fresneda, J Benedi Gonzalez, M Sanjurjo-Sáez
INTRODUCTION: The failure mode and effects analysis (FMEA) has been used as a tool in risk management and quality improvement. The objective of this study is to identify the weaknesses in processes in the clinical trials area, of a Pharmacy Department (PD) with great research activity, in order to improve the safety of the usual procedures. METHODS: A multidisciplinary team was created to analyse each of the critical points, identified as possible failure modes, in the development of clinical trial in the PD...
February 15, 2018: Revista de Calidad Asistencial: Organo de la Sociedad Española de Calidad Asistencial
Belén Herce-Sesa, José A López-López, Carlos Moreno
Transition metals Cd, Pd and Ag are toxic even at very low concentration. Cd is considered a priority substance; while, Pd and Ag are emerging pollutants. Membrane technologies have been applied for their extraction; however, they require important amounts of reagents, time and energy. Additionally, effective reagents for metal extraction in saline natural waters are limited. In this case, hollow fiber liquid phase micro-extraction with a configuration of solvent bar (SBME) using the ionic liquid Cyphos® 101 as extractant is proposed...
February 12, 2018: Journal of Hazardous Materials
Abdol-Mohammad Kajbafzadeh, Nastaran Sabetkish, Shabnam Sabetkish
BACKGROUND: Conventional treatments for patients suffering with end-stage renal disease (ESRD) has several disadvantages, highlighting the importance of other reproducible modalities such as colonic dialysis (CD). OBJECTIVES: The aim was to establish a CD model in uremic rats and evaluate the effect of two different peritoneal dialysis (PD) solutions. METHODS: Thirty-two male Wistar rats were randomly divided into four groups. After right nephrectomy and left partial nephrectomy, a Malone antegrade continence enema (MACE) stoma was created...
February 7, 2018: Journal of Pediatric Urology
Suyeong Nam, Song Yi Lee, Jung-Jin Kim, Wie-Soo Kang, In-Soo Yoon, Hyun-Jong Cho
Polydopamine (PD)-coated nanocomposites (NCs) based on the ethanol extract of Angelica gigas Nakai (AGN EtOH ext) were fabricated and evaluated for breast cancer therapy. AGN NCs were prepared using a modified emulsification-solvent evaporation method and were further incubated in dopamine solution (at pH 8.6) to be covered with the PD layer. PD-AGN NCs with a 213-nm mean diameter, narrow size distribution, and negative zeta potential values were fabricated in this study. Less negative (close to zero) zeta potential value of PD-AGN NCs than that of AGN NCs implied the existence of the PD layer in the outer surface of NCs...
February 11, 2018: Colloids and Surfaces. B, Biointerfaces
Ashima Bhatia, Shraddha Tawade, Mushtaque Mastim, Eliford Ngaimisi Kitabi, Mathangi Gopalakrishnan, Manish Shah, Sridhar Yeshamaina, Joga Gobburu, Maharaj Sahib, Dipak Thakur, K M Prasanna Kumar
AIMS: The objective of the study was to compare the pharmacokinetic (PK) and pharmacodynamic (PD) properties of an insulin glargine formulation, Glaritus ® (test) with the innovator's formulation Lantus ® (reference) using the euglycemic clamp technique in a single-dose, double-blind, randomized, two sequences, four-period replicate crossover study in healthy volunteers (n = 40). METHODS: Subjects received subcutaneous administration of the insulin glargine (0...
February 16, 2018: Acta Diabetologica
Maria Myzithras, Tammy Bigwarfe, Erica Waltz, Hua Li, Jennifer Ahlberg, Irina Rybina, Sarah Low, Cynthia Hess Kenny, John Miglietta, Rachel Kroe-Barrett
AIM: The fully automated microfluidics-based Gyrolab is a popular instrument for the bioanalysis of protein therapeutics; requiring minimal sample and reagent volumes. Gyros offers affinity software for determining binding affinity in solution using a high-throughput method and miniaturized reactions. RESULTS: Using this affinity software, multiple CTGF-targeting reagents were characterized on the Gyrolab after <100% target coverage was seen in a cynomolgus pharmacokinetic/PD study dosed with anti-CTGF antibodies...
February 16, 2018: Bioanalysis
Yoann Cote, Patrice Delarue, Harold Abraham Scheraga, Patrick Senet, Gia G Maisuradze
α-synuclein (αS) is a major constituent of Lewy bodies, the insoluble aggregates that are the hallmark of one of the most prevalent neurodegenerative disorders - Parkinson's disease (PD). The vast majority of experiments in vitro and in vivo provide extensive evidence that a disordered monomeric form is the predominant state of αS in water solution, and it undergoes a large-scale disorder-to-helix transition upon binding to vesicles of different types. Recently, another form, tetrameric, of αS with a stable helical structure was identified experimentally...
February 16, 2018: ACS Chemical Neuroscience
Jicheng Feng, Dong Chen, Ahmad Sediq, Stefan Romeijn, Frans D Tichelaar, Wim Jiskoot, Jun Yang, Marc T M Koper
A key enabling step in leveraging the properties of nanoparticles (NPs) is to explore new, simple, controllable, and scalable nanotechnologies for their syntheses. Among 'wet' methods, cathodic corrosion has been used to synthesize catalytic aggre-gates with some control over their size and preferential faceting. Here, we report on a modification of the cathodic corrosion method for producing a range of non-aggregated nanocrystals (Pt, Pd, Au, Ag, Cu, Rh, Ir, Ni) and nanoalloys (Pt50Au50, Pd50Au50, AgxAu100-x) with potential for scaling up the production rate...
February 15, 2018: ACS Applied Materials & Interfaces
Xiu Ru Lin, Yi Fan Zheng, Xu Chun Song
An electrochemical palladium/ferric oxide (Pd/Fe2O3) nanocomposite modified glassy carbon electrode (GCE) was fabricated by hydrothermal method of Fe2O3 and electrochemical deposition of palladium nanoparticles, respectively. As-prepared Pd/Fe2O3 composite modified electrode exhibits enhanced electrocatalytic activity towards the catalytic oxidation of nitrite compared to Fe2O3, PdNPs modified electrodes and bare electrode. The parameters such as the influence of amount of Pd nanoparticles deposition onto the Pd/Fe2O3 modified electrode (ME) and effect of solution pH were investigated and discussed in detail...
July 1, 2018: Journal of Nanoscience and Nanotechnology
Magdalena Jankowska, Monika Lichodziejewska-Niemierko, Sylwia Małgorzewicz, Bolesław Rutkowski
BACKGROUND: Supplementation with vitamin B1 protects the peritoneal membrane from inflammatory and oxidative insults and preserves residual kidney function in rat models of peritoneal dialysis (PD). It is assumed that an active form of vitamin B1, thiamin diphosphate (ThDP), is responsible for this protective effect. However, it has never been shown whether ThDP, a compound known not to cross cellular membranes, is actually detectable in human peritoneal effluent. OBJECTIVES: This study was designed to investigate the concentration, appearance rate, and daily loss of ThDP in the peritoneal effluent of patients treated with PD...
December 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Itzel Guerrero-Ríos, Alfonso H Ortiz-Ramírez, Piet W N M van Leeuwen, Erika Martin
The asymmetric allylic alkylation of rac-1,3-diphenyl-3-acetoxyprop-1-ene (I) catalysed by palladium and diverse phosphorus containing ligands [(S)-BINAP, (R,R)-Chiraphite and (R,R)-Et-Duphos] in an ionic liquid [HDBU][OAc] was successfully performed, achieving full conversions and up to 96% ee of the (S)-product when (R,R)-Et-Duphos was used as a ligand. The reaction could be performed using an equimolar amount of substrate, malonate and base DBU, in which case the total products sum to the desired alkylated product and the ionic pair [HDBU][OAc]; this system thus produces its own IL solvent as the only co-product...
February 14, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Laura Alonso-Recio, Pilar Martín-Plasencia, Miguel Ruiz, Juan Manuel Serrano
INTRODUCTION: Cognitive impairments are common in Parkinson's disease (PD) patients without dementia. These deficits are quite heterogeneous, which makes it difficult to recognize and treat them. For this reason, many authors have attempted to classify patients into more homogeneous groups with diverse results. The present study was designed to analyze the cognitive heterogeneity in PD patients using a novel data-driven approach, latent profile analysis (LPA), to classify patients according to cognitive characteristics...
February 12, 2018: Journal of Clinical and Experimental Neuropsychology
Qian-Qian Yan, Shao-Jun Hu, Guang-Lu Zhang, Ting Zhang, Li-Peng Zhou, Qing-Fu Sun
Materials with aggregation-induced emission (AIE) properties have received increased attention recently due to their potential applications in light-emitting devices, chemo/biosensors and biomedical diagnostics. In general, AIE requires the forced aggregation of the AIEgens induced by the poor solvent or close arrangement of AIEgens covalently attached to polymer chains. Here, we report two coordination-enhanced fluorescent supramolecular complexes featuring hierarchically restricted intramolecular motions via the self-assembly of tetraphenylethylene (TPE)-based tetra-dentate (La) and bidentate (Lb) ligands and the cis-Pd(en)(NO₃)₂ (en = ethylenediamine) unit...
February 9, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
V Rosar, A Meduri, T Montini, P Fornasiero, E Zangrando, B Milani
Two new nonsymmetric bis(aryl-imino)acenaphthene ligands (Ar,Ar'-BIAN) and one symmetric Ar2-BIAN were studied. The three ligands share the presence of at least one methoxy group on one of the two aryl rings. These ligands were used for the synthesis of neutral and monocationic palladium(ii) complexes of general formula [Pd(CH3)Cl(N-N)] and [Pd(CH3)(L)(N-N)][PF6] (N-N = Ar,Ar'-BIAN, Ar2-BIAN; L = CH3CN, dmso). Due to the nonsymmetric nature of the ligands and their coordination to palladium in a nonsymmetric chemical environment, cis and trans isomers are possible for the three series of complexes with Ar,Ar'-BIANs...
February 8, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Jingjie Ge, Pei Wei, Geng Wu, Yudan Liu, Tongwei Yuan, Zhijun Li, Yunteng Qu, Yuen Wu, Hai Li, Zhongbin Zhuang, Xun Hong, Yadong Li
An ordered mesh of palladium with a thickness of about 3 nm was synthesized by a solution-based oxidative etching. The ultrathin palladium nanomeshes have an interconnected two-dimensional network of densely arrayed, ultrathin quasi-nanoribbons that form ordered open holes. The unique mesoporous structure and high specific surface area make these ultrathin Pd nanomeshes display superior catalytic performance for ethanol electrooxidation (mass activity of 5.40 A mg-1 and specific activity of 7.09 mA cm-2 at 0...
February 7, 2018: Angewandte Chemie
Yingying Sun, An Ninh Pham, T David Waite
Parkinson's disease (PD) is the second most common neurodegenerative disorder in the world. The oxidative stress and DA derived quinones have been proposed to be closely related to the progression of PD. To examine the possibility of the application of ascorbate (Asc) as a therapeutic strategy in PD, the effect of Asc on the fate of iron both in the absence and presence of DA was investigated. The results of this study indicate that, in the absence of iron, the presence of high concentrations of Asc is of great benefit in view of the alleviation in oxidative stress and formation of DA derived quinones by quenching radicals, such as O2˙- and DA˙-...
February 6, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
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