367 research outputs found
A Social Psychological Perspective on the Forming of Path Dependence in Old Industrial Regions âThe Case of Shanxi Province in China
Among so many research literatures in industrial cluster, there lacks still exploration to the possible risks of industrial cluster. Path dependency, which is absolutely not only a phenomenon in technological development, existing not only in an organization but also in the process of cluster development, has been neglected at certain degree in developing regional cluster. The aim of the paper is to address the question of how the micro foundation of path dependence can be explained through a social psychological perspective. By referring to the two concepts from social psychology, selective attention and identity, this paper illustrates the psychological factors leading to the forming of path dependence in industrial cluster. Key words: industrial cluster, path dependency, regional identity, selective attention, social psychology RĂ©sumĂ©: Parmi de nombreux documents de recherches sur le bloc industriel, il manque encore des explorations sur les risques possibles du bloc industriel. La voie de dĂ©pendance, qui nâest pas seulement un phĂ©nomĂšne dans le dĂ©veloppement technologique, existant non seulement dans une organisation mais aussi dans le processus du dĂ©veloppement du bloc, a Ă©tĂ© nĂ©gligĂ©e dans certaines mesures dans le dĂ©veloppement du bloc industriel regional. Lâobjectif de cet article est dâ exposer comment la micro-fondation de la voie de dĂ©pendance peut ĂȘtre expliquĂ©e dans une perspective sociale et psychologique. Se rĂ©fĂ©rant Ă deux concepts de la psychologie sociale-attention sĂ©lective et identitĂ©, cet article illustre les facteurs psychologiques qui conduisent Ă la formation de la voie de dĂ©pendance dans la bloc industriel. Mots-ClĂ©s: bloc industriel, voie de dĂ©pendance, identitĂ© rĂ©gionale, attention sĂ©lective, psychologie social
Application analysis on different suture of scleral flap in trabeculectomy
AIM: To research the application of scleral flap suture in trabeculectomy. <p>METHODS: Totally 114 primary angle-closure glaucoma patients, aged from 36-72 years old, were selected as the objects, and randomly divided into research group and control group. The two groups received different administration methods. Traditional sewing method of sclera flap was used in research group and improved sewing method of sclera flap was used in control group. <p>RESULTS: There was statistical differences between postoperative intraocular pressure of the patients in the observation group and the control group after 1d; 2wk; 1, 3mo(<i>P</i><0.05). There was no statistical difference in intraocular pressure between the two groups. There was statistical differences between incidence of shallow anterior chamber of the patients in the observation group and the control group postoperatively early stage(<i>P</i><0.05). After 6mo, the filtering bleb formation in observation group was no significantly better than control group(<i>P</i>>0.05).<p>CONCLUSION: It is safe and effective that the improved sewing method of sclera flap for trabeculectomy of acute angle-closure glaucoma, and it is a better method to avoid the occurrence of shallow anterior chamber than the traditional sewing method in the early stage after operation
Banna Virus, China, 1987â2007
Banna viruses (BAVs) have been isolated from pigs, cattle, ticks, mosquitoes, and human encephalitis patients. We isolated and analyzed 20 BAVs newly isolated in China; this finding extends the distribution of BAVs from tropical zone to north temperate climates and demonstrate regional variations in BAV phylogeny and mosquito species possibly involved in BAV transmission
Mesenchymal stem cells as carriers and amplifiers in CRAd delivery to tumors
<p>Abstract</p> <p>Background</p> <p>Mesenchymal stem cells (MSCs) have been considered to be the attractive vehicles for delivering therapeutic agents toward various tumor diseases. This study was to explore the distribution pattern, kinetic delivery of adenovirus, and therapeutic efficacy of the MSC loading of E1A mutant conditionally replicative adenovirus Adv-Stat3(-) which selectively replicated and expressed high levels of anti-sense Stat3 complementary DNA in breast cancer and melanoma cells.</p> <p>Methods</p> <p>We assessed the release ability of conditionally replicative adenovirus (CRAd) from MSC using crystal violet staining, TCID<sub>50 </sub>assay, and quantitative PCR. In vitro killing competence of MSCs carrying Adv-Stat3(-) toward breast cancer and melanoma was performed using co-culture system of transwell plates. We examined tumor tropism of MSC by Prussian blue staining and immunofluorescence. In vivo killing competence of MSCs carrying Adv-Stat3(-) toward breast tumor was analyzed by comparison of tumor volumes and survival periods.</p> <p>Results</p> <p>Adv-Stat3(-) amplified in MSCs and were released 4 days after infection. MSCs carrying Adv-Stat3(-) caused viral amplification, depletion of Stat3 and its downstream proteins, and led to significant apoptosis in breast cancer and melanoma cell lines. In vivo experiments confirmed the preferential localization of MSCs in the tumor periphery 24 hours after tail vein injection, and this localization was mainly detected in the tumor parenchyma after 72 hours. Intravenous injection of MSCs carrying Adv-Stat3(-) suppressed the Stat3 pathway, down-regulated Ki67 expression, and recruited CD11b-positive cells in the local tumor, inhibiting tumor growth and increasing the survival of tumor-bearing mice.</p> <p>Conclusions</p> <p>These results indicate that MSCs migrate to the tumor site in a time-dependent manner and could be an effective platform for the targeted delivery of CRAd and the amplification of tumor killing effects.</p
Prussian blue@MoS2 layer composites as highly efficient cathodes for sodium- and potassium-ion batteries
Prussian blue (PB) represents a simple, economical, and eco-friendly system as cathode material for sodium-ion batteries (SIBs). However, structural problems usually worsen its experimental performance thus motivating the search for alternative synthetic strategies and the formation of composites that compensate these deficiencies. Herein, a straightforward approach for the preparation of PB/MoS2-based nanocomposites is presented. MoS2 provides a 2D active support for the homogeneous nucleation of porous PB nanocrystals, which feature superior surface areas than those obtained by other methodologies, giving rise to a compact PB shell covering the full flake. The nanocomposite exhibits an excellent performance as cathode for SIBs with discharge capacity values up to 177 mA h gâ1 and a specific capacitance of 354 F gâ1. These values are even larger for the intercalation of K+ ions (up to 215 mA h gâ1, reaching a specific capacitance of 489 F gâ1). Compared to similar composites, superior performance can be ascribed to a synergistic effect of the coordination compound with the 2D material
EVALUATION OF EFFECTIVENESS IN A NOVEL WOUND HEALING OINTMENT-CROCODILE OIL BURN OINTMENT
Background: Crocodile oil and its products are used as ointments for burns and scalds in traditional medicines. A new
ointment formulation - crocodile oil burn ointment (COBO) was developed to provide more efficient wound healing
activity. The purpose of the study was to evaluate the burn healing efficacy of this new formulation by employing deep
second-degree burns in a Wistar rat model. The analgesic and anti-inflammatory activities of COBO were also studied
to provide some evidences for its further use.
Materials and methods: The wound healing potential of this formulation was evaluated by employing a deep
second-degree burn rat model and the efficiency was comparatively assessed against a reference ointment â (1% wt â wt)
silver sulfadiazine (SSD). After 28 days, the animals were euthanized and the wounds were removed for transversal
and longitudinal histological studies. Acetic acid-induced writhing in mice was used to evaluate the analgesic activity
and its anti-inflammatory activity was observed in xylene -induced edema in mice.
Results: COBO enhanced the burn wound healing (20.5±1.3 d) as indicated by significant decrease in wound closure
time compared with the burn control (25.0±2.16 d) (
The sudden change phenomenon of quantum discord
Even if the parameters determining a system's state are varied smoothly, the
behavior of quantum correlations alike to quantum discord, and of its classical
counterparts, can be very peculiar, with the appearance of non-analyticities in
its rate of change. Here we review this sudden change phenomenon (SCP)
discussing some important points related to it: Its uncovering,
interpretations, and experimental verifications, its use in the context of the
emergence of the pointer basis in a quantum measurement process, its appearance
and universality under Markovian and non-Markovian dynamics, its theoretical
and experimental investigation in some other physical scenarios, and the
related phenomenon of double sudden change of trace distance discord. Several
open questions are identified, and we envisage that in answering them we will
gain significant further insight about the relation between the SCP and the
symmetry-geometric aspects of the quantum state space.Comment: Lectures on General Quantum Correlations and their Applications, F.
F. Fanchini, D. O. Soares Pinto, and G. Adesso (Eds.), Springer (2017), pp
309-33
JUNO Conceptual Design Report
The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine
the neutrino mass hierarchy using an underground liquid scintillator detector.
It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants
in Guangdong, China. The experimental hall, spanning more than 50 meters, is
under a granite mountain of over 700 m overburden. Within six years of running,
the detection of reactor antineutrinos can resolve the neutrino mass hierarchy
at a confidence level of 3-4, and determine neutrino oscillation
parameters , , and to
an accuracy of better than 1%. The JUNO detector can be also used to study
terrestrial and extra-terrestrial neutrinos and new physics beyond the Standard
Model. The central detector contains 20,000 tons liquid scintillator with an
acrylic sphere of 35 m in diameter. 17,000 508-mm diameter PMTs with high
quantum efficiency provide 75% optical coverage. The current choice of
the liquid scintillator is: linear alkyl benzene (LAB) as the solvent, plus PPO
as the scintillation fluor and a wavelength-shifter (Bis-MSB). The number of
detected photoelectrons per MeV is larger than 1,100 and the energy resolution
is expected to be 3% at 1 MeV. The calibration system is designed to deploy
multiple sources to cover the entire energy range of reactor antineutrinos, and
to achieve a full-volume position coverage inside the detector. The veto system
is used for muon detection, muon induced background study and reduction. It
consists of a Water Cherenkov detector and a Top Tracker system. The readout
system, the detector control system and the offline system insure efficient and
stable data acquisition and processing.Comment: 328 pages, 211 figure
- âŠ