Pd cluster nanowires as highly efficient catalysts for selective hydrogenation reactions.

Palladium is a key catalyst invaluable to many industrial processes and fine-chemical synthesis. Although recent progress has allowed the synthesis of Pd nanoparticles with various shapes by using different techniques, the facile synthesis of Pd nanocrystals and turning them into a highly active, selective, and stable catalyst systems still remain challenging. Herein, we report the highly selective one-pot synthesis of monodisperse Pd cluster nanowires in aqueous solution; these consist of interconnected nanoparticles and may serve as highly active catalysts because of the enrichment of high index facets on the surface, including {443}, {331}, and {221} steps.

[Minimally invasive percutanuous cannulated pedicle screw system fixation for the treatment of thoracolumbar flexion-distraction fracture without neurologic impairment].

Objective: To explore the feasibility and effect of percutanuous cannulated pedicle screw AF system fixation for the treatment of thoracolumbar flexion-distraction fracture without neurologic impairment.

Methods: From June 2008 to June 2010,21 patients with thoracolumbar flexion-distraction fracture were treated with percutanuous cannulated pedicle screw fixation. There were 16 males and 5 females with the mean age of 32.

[A pre- and post-treatment study of quality of life in patients with benign paroxysmal positional vertigo].

Objective: To explore the effect of canalith repositioning procedure (CRP) on the quality of life (QOL) in patients with benign paroxysmal positional vertigo(BPPV).

Method: The clinical data of 86 patients with BPPV (treatment group) and 120 normal ones (control group) were reviewed through the medical outcomes study short form (SF-36)and the dizziness handicap inventory (DHI), and the results of two groups were analyzed.

Result: With SF-36 scales for evaluation of QOL, the results showed that the scores of treatment group before CRP were significantly lower than that of the control group (P < 0.

[Step treatment strategy of degenerative lumbar scoliosis and spinal stenosis].

Objective: Degenerative lumbar scoliosis and spinal stenosis are more common in elderly patients. Because of many factors, treatment choices are more complex. To investigate the step treatment strategy of degenerative lumbar scoliosis and spinal stenosis.

Molecular characterization and epidemiological investigation of Pigeon circovirus isolated in eastern China.

To investigate the prevalence and genetic characterization of Pigeon circovirus (PiCV) circulating in Chinese flocks, the genomic DNA of 144 samples collected from pigeons in 6 different geographic regions of eastern China between 2009 and 2010 were amplified using previously published PiCV primers. The PiCV sequence was detected in 83 of 104 unhealthy pigeons (79.8%) and 25 of 40 healthy pigeons (62.

Antitumor activity of a recombinant soluble ectodomain of mutant human fibroblast growth factor receptor-2 IIIc.

The fibroblast growth factor (FGF) signaling pathway is a recognized target of cancer therapy. We have developed a strong inhibitor (S252W mutant soluble ectodomain of FGF recptor-2 IIIc, msFGFR2) that binds FGFs and blocks the activation of FGFRs. Thermodynamic binding studies indicated that msFGFR2 bound FGF-2 16.

Controlled hydrogenation of P(VDF-co-CTFE) to prepare P(VDF-co-TrFE-co-CTFE) in the presence of CuX (X = Cl, Br) complexes.

An environmentally friendly and controllable P(VDF-co-CTFE) hydrogenation route involving the transition-metal complex mediated radical chain transfer reaction is successfully developed to synthesize P(VDF-co-CTFE-co-TrFE). The typical transition metal catalysts of ATRP reaction could be applied in this process.

Calcium pentosan polysulfate and sodium pentosan polysulfate may be used to treat intervertebral disc degeneration.

Intervertebral disc degeneration (IDD) is a major health problem world-wide, and several spinal disorders are closely associated with it. Although people have invested a great deal of time and effort, how to prevent and reverse the IDD for the researchers is still a difficult and hot issue. Intervertebral disc belongs to cartilage tissue, and IDD also is the cartilage degeneration disease.

Study on mechanical and ablative properties of EPDM/OMMT thermal insulating nanocomposites.

In order to enhance the elongation at break, the ablation resistant properties as well as the tensile strength of the thermal insulating materials, organo-montmorillonite (OMMT) was introduced into the short aramid fibers reinforced Ethylene-Propylene-Diene Monomer (EPDM) based nanocomposites. The effects of OMMT content on the mechanical and ablative properties of the nanocomposites were investigated systematically. X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirm that EPDM-matrix has been intercalated into OMMT interlayers after a mixing process on a two-roll mill.

[Posttraumatic benign paroxysmal positional vertigo: analysis of 23 cases].

Objective: To compare the clinical presentation and outcome between patients with traumatic-BPPV (t-BPPV) and idiopathic-BBPV(i-BPPV).

Method: The clinical records of 186 patients with posterior canal BPPV were reviewed retrospectively. All patients were diagnosed using the Dix-Hallpike test and treated with the canalith repositioning procedure.

[Clinical classification and surgical options of the far-lateral lumbar disc herniation].

Objectives: To suggest the clinical classification of the far-lateral lumbar disc herniation and offer the considerations for clinical choice of different surgical procedures.

Methods: According to the locations of the herniated disc and relevant clinical symptoms, the far-lateral lumbar disc herniation was divided into three types: Type I: posterolateral and foraminal herniation(double herniations); Type II: foraminal disc herniation and Type III: extraforaminal herniation. From January 2002 to January 2007, 38 patients with far lateral lumbar disc herniation underwent surgery in the institute.

Phase I study of concurrent selective lymph node late course accelerated hyper-fractionated radiotherapy and Capecitabine, Cisplatin for locally advanced esophageal squamous cell carcinoma.

Twelve patients with locally advanced esophageal squamous cell carcinoma were enrolled to evaluate the safety and efficacy of concurrent chemo-radiotherapy. Dose-limiting toxicity was mainly observed at Capecitabine 1500 mg. The maximum-tolerated dose/recommended dose of Capecitabine was 1000 mg.

Fabrication of superparamagnetic magnetite/poly(styrene-co-12-acryloxy-9-octadecenoic acid) nanocomposite microspheres with controllable structure.

We herein report a novel and facile approach to the fabrication of the superparamagnetic magnetite/poly(styrene-co-12-acryloxy-9-octadecenoic acid) nanocomposite microspheres with controllable structure via gamma-ray radiation induced inverse emulsion polymerization under room temperature and at ambient pressure. 12-Acryloxy-9-octadecenoic acid (AOA, containing part of sodium salts Na-AOA) as a surfactant can also copolymerize with the styrene. It is interesting that just by changing the added amount of styrene, the magnetic hollow spheres with different wall thickness and various sizes of core, up to the magnetic solid spheres, can be obtained.

[The application of computer aided design and computer aided engineering technique in separation of Pygopagus conjoined twins].

Objectives: To explore the effect of CAD and CAE related technique in separation of Pygopagus Conjoined Twins.

Methods: CT images of Pygopagus conjoined twins were obtained and reconstructed in three-dimensional by Mimics software. 3D entity model of skin and spine of conjoined twins were made by fast plastic technique and equipment according to 3D data model.

[The surgical separation of pygopagus conjoined twins].

Objective: To explore the program of preoperative evaluation, preoperative preparation and separation operation of pygopagus conjoined twins.

Methods: Clinical data of one case of pygopagus (male, gestational age 37 weeks, uterine-incision delivery, 3.5 months old; twins of triplets; total body weight 8.

[Value of imaging in the preoperative diagnosis of pygopagus conjoined twins].

Objective: To explore the value of imaging in the preoperative evaluation of pygopagus conjoined twins (PCT), and analyze the significance of imaging for separation surgery plan and prognosis.

Methods: Imaging data of a case with PCT, including ultrasound, X-ray, CT, MRI were collected from the case with PCTs treated in our hospital. The features of the images were analyzed for identification of the conjoined region, size, and structures and for judgement of other organ malformation and general body state.

In vivo measurement of protein functional changes.

Conformational changes in proteins are fundamental to all biological functions. In protein science, the concept of protein flexibility is widely used to describe protein dynamics and thermodynamic properties that control protein conformational changes. In this study, we show that urea, which has strong sedative potency, can be administered to fish at high concentrations, and that protein functional changes related to anesthesia induction can be measured in vivo.

Complexation of uranium(VI) by gluconate in acidic solutions: a thermodynamic study with structural analysis.

Within the pC(H) range of 2.5 to 4.2, gluconate forms three uranyl complexes UO(2)(GH(4))(+), UO(2)(GH(3))(aq), and UO(2)(GH(3))(GH(4))(-), through the following reactions: (1) UO(2)(2+) + GH(4)(-) = UO(2)(GH(4))(+), (2) UO(2)(2+) + GH(4)(-) = UO(2)(GH(3))(aq) + H(+), and (3) UO(2)(2+) + 2GH(4)(-) = UO(2)(GH(3))(GH(4))(-) + H(+).

Increased levels of oxidative DNA damage attributable to cooking-oil fumes exposure among cooks.

Previous investigations have indicated that cooks are exposed to polycyclic aromatic hydrocarbons (PAHs) from cooking-oil fumes. However, Emission of PAH and their carcinogenic potencies from cooking oil fumes sources have not been investigated among cooks. To investigate the urinary excretion of a marker for oxidative DNA damage, 8-hydroxydeoxyguanosine (8-OHdG), in different groups of cooks and different exposure groups, and to study the association between 8-OHdG and 1-hydroxypyrene(1-OHP), a biological marker for PAH exposure.

[The primary evaluation of its safety and immune effect of NogoA vaccination for spinal cord injury].

Objectives: To prepare and purify NogoA vaccination for treatment of spinal cord injury. To study the safety and immune effect of this vaccination.

Methods: Artificial NogoA-13 polypeptide was coupled with KLH to improve the immunogenicity of vaccination.

A novel preparation of surface-modified paramagnetic magnetite/polystyrene nanocomposite microspheres by radiation-induced miniemulsion polymerization.

A novel and facile approach to the preparation of paramagnetic magnetite/polystyrene nanocomposite microspheres by 60Co gamma-ray radiation-induced miniemulsion polymerization is reported. First, we modified the magnetite nanoparticles (MPs) with a Y-shaped surfactant: 12-hexanoyloxy-9-octadecenoic acid (HOA). Nanocomposite microspheres consisting of polystyrene-iron oxide nanoparticles then were prepared by the radiation-induced miniemulsion polymerization of styrene in the presence of HOA-modified MPs using HOA as stabilizer.

Fabrication of novel multihollow superparamagnetic magnetite/polystyrene nanocomposite microspheres via water-in-oil-in-water double emulsions.

We herein present a novel and simple synthetic strategy for fabricating multihollow superparamagnetic magnetite/polystyrene nanocomposite microspheres via water-in-oil-in-water double emulsions. Amphipathic magnetite nanoparticles surface-modified with oleic acid act as an oil-soluble emulsifier and sodium dodecyl sulfate acts as a water-soluble surfactant in the system. The final products were thoroughly characterized by X-ray powder diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and field-emission scanning electron microscopy, which showed the formation of multihollow magnetite/polystyrene nanocomposite microspheres.

Incorporation of disodium alkyl polyoxyethylene ether sulfosuccinate inside styrene droplets: mechanism and its application for preparation of multihollow polymer spheres.

Emulsion polymerization of styrene was carried out using two kinds of alkyl polyoxyethylene ether sulfosuccinates as surfactant: disodium cetyl polyoxyethylene (25) ether sulfosuccinate (CPS) and octyl-phenol polyoxyethylene (10) ether sulfosuccinate (OPS). In experiments, the incorporation of CPS or OPS inside styrene droplets and polystyrene particles was clearly observed. Based on this phenomenon, multihollow polymer spheres are prepared in a one-step reaction and this strongly supports the proposed incorporation mechanism.