bluuebunny/crossref_metadata_2025 huggingface dataset:
Le mobilier campaniforme morbihannais de la collection Chaplain-Duparc (1819-1888) : Belz, Erdeven, Plouharnel / Bell-beaker ceramics from Morbihan in the Chaplain-Duparc collection (1819-1888) : Belz, Erdeven, Plouharnel
Authors: Le Boulaire Antoine , Cassen Serge
Published: December 2011

The Chaplain-Duparc collection was built up between 1877 and 1878, following the exploration of megalithic monuments in Morbihan, and it remained for a long time in the vaults of the Tessée museum in Le Mans without being studied. When it was rediscovered in 1999, a remarkable series of ceramics came to light, ranging from early Neolithic to Iron Age with a few more modem pieces. Among this collection a remarkable group of Beakers was found. Their study, in the laboratory of Prehistory in Nantes, concentrated on a technoiogical approach to establish technoiogical and decorative caracteristics. So, some pottery, little known in the région alongside Beakers, enforce reconsideration of the Armorican component and the importance of "ancillary vessels" is emphasized. The internal chronology of Beaker and final Neolithic ceramics is also reviewed, with implications conceming Late Neolithic populations and emergence of Eahy Bronze Age ceramics.
Défier Hollywood : la diplomatie culturelle et le cinéma à l'ère Brejnev
Authors: Kozovoï Andreï
Published: December 2011

Résumé Après 1964, la diplomatie culturelle soviétique utilise plus que jamais l’industrie cinématographique pour rivaliser avec « l’ennemi principal » de guerre froide, Hollywood, et ce, dans le monde entier. De la célèbre adaptation par Bondartchouk de Guerre et paix de Tolstoï (1965) à la saga militaire Libération (1971), largement oubliée aujourd’hui, la première partie de l’ère Brejnev est marquée par un effort destiné non seulement à regagner le terrain perdu face aux États-Unis, mais aussi à contrer une vision de l’histoire hostile à la mythologie officielle du parti. Si le bilan de cette offensive apparaît décevant, l’étude des coproductions montre qu’en réalité, il convient de se garder des schémas binaires (efficacité/inefficacité) dans l’étude de la diplomatie culturelle soviétique.
Spinal Posterior Movement After Posterior Cervical Decompression Surgery: Clinical Findings and Factors Affecting Postoperative Functional Recovery
Authors: Xia Gang , Tian Rong , Xu Tiantong , Li Huiming , Zhang Xueli
Published: December 2011

This study investigated the posterior movement of the spinal cord after posterior decompression surgery and evaluated factors affecting postoperative functional recovery in patients with cervical spondylotic myelopathy (CSM). Thirty-two patients with CSM underwent posterior decompression from C3 to C7 through laminectomy (n=12) and single, open-door laminoplasty (n=20). There were no significant differences between laminectomy and laminoplasty in degree of spinal posterior movement, recovery rate, and curvature index. Japanese Orthopedic Association (JOA) scores improved from preoperative (10.63±1.77; range, 7–14) to 3-months postoperative (13.57±1.50; range, 11–16) (n=32,
P
<.05) and from preoperative (10.24±1.87; range, 7–14) to 6-months postoperative (14.16±1.54; range, 12–16) (n=21) (
P
<.05). C5 palsy was observed in 1 (3.1%) patient. The vertebral body-to-spinal cord distances significantly increased after operations, with the greatest posterior movement at C5 and the least posterior movement at C3 and C7. However, the difference in the degree of the spinal movement of C3 to C7 was not statistically significant (
P
>.05). Furthermore, no correlation was found between the magnitude of spinal posterior movement and the curvature index. In addition, the magnitude of posterior movement and age were not correlated with the postoperative JOA improvement, but the preoperative JOA scores were.

Our study shows that both laminectomy and laminoplasty can produce a similar degree of posterior movement of the spinal cord. Cervical lordosis is not associated with the posterior movement of the cord. The preoperative JOA scores, but not posterior movement of the cord and age, are important determinants for postoperative outcome.
Navigated Total Hip Arthroplasty Using a 3-D Freehand Ultrasound System: Technical Note and Preliminary Results
Authors: Hirschmann Michael T. , Afifi Faik K. , Helfrich Carsten , Wirz Dieter , Schwägli Tobias , Overhoff Heinrich Martin , Moser Walter , Friederich Niklaus F.
Published: December 2011

Ultrasound-navigated cementless total hip arthroplasty (THA) was performed in 10 consecutive patients with primary osteoarthritis of the hip between August 2008 and October 2009 (M:F, 6:4; median age, 61 years; age range, 30–86 years). The pelvic orientation was defined by preoperative digitization and registration of bony landmarks. Cup inclination and anteversion were documented for each patient intraoperatively (epidigitized vs ultrasound-assessed landmarks). The median difference between the palpated and ultrasound anterior pelvic plane was 8° (range, 4°–18°) for pelvic tilt (rotation around the transversal axis), 1° (range, −3° to 2°) for rotation around the longitudinal axis, and 0.25° (range, −2.0° to 5.0°) for rotation around the sagittal axis. The median difference in cup orientation resulting from pelvic tilt error was 6° (range, 3°–13°) for anteversion and 3° (range, −1° to 5°) for inclination. There were no intra- or postoperative complications. The measured width of soft tissue layer anterior to the pelvic symphysis correlated significantly with the measured difference in cup inclination and anteversion. One centimeter of soft tissue anterior to the symphysis resulted in a median 2° (range, 1.75°–2.3°) difference in pelvic tilt.

Ultrasound-assisted navigation in THA is a promising technology able to eliminate systematic errors in anterior pelvic plane orientation, in contrast to conventionally navigated THA using percutaneous palpation of landmarks or THA without navigational support.
Bone Morphogenetic Protein-2 Compared to Autologous Iliac Crest Bone Graft in the Treatment of Long Bone Nonunion
Authors: Tressler Marc A. , Richards Justin E. , Sofianos D’mitri , Comrie F. Kyle , Kregor Philip J. , Obremskey William T.
Published: December 2011

This retrospective study investigated the effect of recombinant human bone morphogenetic protein-2 (rhBMP-2) mixed with cancellous allograft on fracture healing compared to iliac crest autograft in the treatment of long bone nonunion. Eighty-nine patients with 93 established long bone nonunions treated between January 2002 and June 2004 at a single academic Level I trauma center were evaluated. Patients with clinical and radiographic evidence of failed fracture union underwent nonunion debridement, revision of fixation, and implantation at the nonunion site of either rhBMP-2 or the standard treatment autologous iliac crest bone graft. Union rate, operative time, estimated intraoperative blood loss, hospital length of stay, and postoperative infections were recorded. Nineteen nonunions received rhBMP-2 on a specialized carrier matrix (an absorbable collagen sponge) mixed with cancellous allograft, and 74 nonunions were treated with autologous iliac crest bone graft. There was no statistical difference in the rate of healing between treatment groups (68.4% vs 85.1%, respectively;
P
=.09). Incidence of postoperative infection was 16.2% after autologous iliac crest bone graft and 5.3% after rhBMP-2/absorbable collagen sponge (
P
=.22). Iliac crest autograft was associated with longer operative procedures (257.9±93.0 vs 168.9±86.5 minutes;
P
=.0007) and greater intraoperative blood loss (554.6±447.8 vs 331.6±357.2 mL;
P
=.01). These outcomes suggest that rhBMP-2 may provide a suitable alternative to autologous iliac bone graft, with the possible advantages of shorter operative time and reduced intraoperative blood loss, and may be considered as part of the orthopedic surgeon’s treatment options.
Percutaneous Limited Internal Fixation Combined With External Fixation to Treat Open Pelvic Fractures Concomitant With Perineal Lacerations
Authors: Chen Linwei , Zhang Guoyou , Wu Yaoshen , Guo Xiaoshan , Yuan Wen
Published: December 2011

External fixation combined with colostomy is a traditional management of the pelvic fractures associated with perineal lacerations. However, malunion and dysfunction caused by malreduction and loss of reduction are common. One-stage definitive fixation without soft tissue harassment is requisite for the treatment. The purpose of this study was to assess the outcome of 1-stage definitive fixation by combining percutaneous limited internal fixation and external fixation in the treatment of pelvic fractures with perineal lacerations. Eighteen adults with high-energy unstable pelvic ring fractures associated with perineal lacerations were admitted between June 2003 and December 2010. Mean follow-up was 28 months. After wound closure and colostomy, 10 patients received external fixation and percutaneous screw fixation, and 8 patients underwent external fixation. Demographics, wound and fracture classification, and Injury Severity Score were comparable between the groups (
P
>.05). Initial reduction quality was comparable between the groups (
P
=.14), but the loss of reduction during follow-up was more significant in the external fixation group (
P
=.004). Combined fixation achieved better functional results than external fixation (
P
=.02). There were 2 cases of superficial wound infection in each group (
P
=1.0). By combining debridement, wound closure, colostomy, percutaneous limited internal fixation, and external fixation, we improved pelvic fracture recovery while reducing the risk of infection. One-stage definitive fixation is a better choice than external fixation in the treatment of open pelvic fracture concomitant with perineal wound.
New Computed Radiography Processing Condition for Whole-spine Radiography
Authors: Sasagawa Takeshi , Kunogi Junichi , Masuyama Shigeru , Ogihara Satoshi , Takeuchi Yosuke , Takeshita Yujiro , Kamiya Naokazu , Murakami Hideki , Tsuchiya Hiroyuki
Published: December 2011

Computed radiography (CR) has many advantages compared with conventional radiographs, especially in image processing. Although CR is being used in chest radiography and mammography, it has not been applied to spine imaging. The purposes of this study were to formulate a set of new CR processing parameters and to test whether the resultant whole-spine radiographs visualized the spine more clearly than conventional images. This study included 29 patients who underwent whole-spine radiographs. We used 3 image processing methods to improve the clarity of whole-spine radiographs: gradation processing, dynamic range control processing, and multi-objective frequency processing. Radiograph definition was evaluated using vertebrae sampled from each region of the whole spine, specifically C4, C7, T8, T12, and L3; evaluation of the lateral view also included the sacral spine and femoral head. Image definition was assessed using a 3-point grading system. The conventional and processed CR images (both frontal and lateral views) were evaluated by 5 spine surgeons. In all spinal regions on both frontal and lateral views, the processed images showed statistically significantly better clarity than the corresponding conventional images, especially at T12, L3, the sacral spine, and the femoral head on the lateral view. Our set of new CR processing parameters can improve the clarity of whole-spine radiographs compared with conventional images. The greatest advantage of image processing was that it enabled clear depiction of the thoracolumbar junction, lumbar vertebrae, sacrum, and femoral head in the lateral view.
Factors Affecting Interest in Orthopedics Among Female Medical Students: A Prospective Analysis
Authors: Baldwin Keith , Namdari Surena , Bowers Andrea , Keenan Mary Ann , Levin L. Scott , Ahn Jaimo
Published: December 2011

The field of orthopedics has a limited ability to recruit high-quality female applicants. The purpose of this study was to determine whether early exposure to the field affects a woman’s decision to pursue orthopedics. We performed a prospective, nonrandomized cohort study between academic years 2005 and 2009 and compared interest in orthopedic surgery among female (n=271) and male (n=71) medical students at 2 urban teaching institutions. Elective lectures and orthopedic literature were distributed via e-mail to the study participants. These materials included articles published in the medical literature, materials produced and distributed by the American Academy of Orthopaedic Surgeons, and Web sites providing educational materials. The primary outcome was the likelihood of application for orthopedic residency.

We studied the influence of demographics, exposure, and attitudes on interest in pursuing an orthopedic career. Men had a significantly higher baseline level of interest in orthopedic surgery than women (
P
=.005). Younger age (
P
<.001) and personal (
P
<.001), independent (
P
<.001), and school (
P
=.023) exposures to orthopedics were significantly related to interest among women. At final follow-up, total personal exposures (
P
=.003) and total independent exposures (
P
<.001) in the form of our literature and lectures were correlated with final interest in women. Female interest was decreased by the long hours, physical demands, and predominantly male nature of the field. Early exposure to orthopedic educational resources may be useful in generating female interest. Perceptions and attitudes regarding orthopedic surgery must to be changed to attract the best and brightest minds, regardless of sex.
Intraoperative Fabrication of Bone Tamps for Indirect Reduction of Depressed Articular Segments
Authors: Eichinger Josef K. , Beingessner Daphne
Published: December 2011

The use of bone tamps for indirect reduction of depressed articular segments is an established method of treatment for intra-articular fractures in a variety of joint injuries. Customized bone tamps can be fabricated intraoperatively using commonly available instruments and supplies consisting of Steinmann pins and T-handled chucks. The technique combines the use of bone tamps through carefully created metaphyseal windows, fluoroscopic guidance, packing with cancellous bone, and adequate fixation. This treatment methodology can allow for a minimally invasive or soft tissue preserving approach for the treatment of some intra-articular fractures while achieving anatomic reduction of the joint surface.
Herpes Zoster Virus: An Unusual but Potentially Treatable Cause of Sciatica and Foot Drop
Authors: Sprenger De Rover Walter B. , Alazzawi Sulaiman , Hallam Peter J. , Hutchinson Rachael , Di Mascio Livio
Published: December 2011

The herpes zoster virus is a rare but potential cause of acute motor weakness. This article describes 2 patients with drop foot secondary to an infection of varicella zoster who were incorrectly referred to an orthopedic clinic from their general practitioners. The first patient was a 74-year-old man who presented with weakness in the right foot and a vesicular rash. The pattern of disease supported the clinical diagnosis of shingles affecting the L5 motor and sensory division. No investigation was required, and the patient was treated with a foot drop splint. The second patient was a 71-year-old man who presented with right leg and foot weakness and a vesicular rash affecting his right buttock and posterior right thigh. Lumbar magnetic resonance excluded a stenotic lesion; electrophysiological studies supported the diagnosis of a lower motor neuron lesion. The patient was treated with a 1-week course of acyclovir and a foot drop splint. The correct diagnosis will aid in correct referral and will prompt management, which will potentially provide a faster and better outcome for the patient.
Intraosseous Ganglion With Impending Fracture of the Glenoid
Authors: Tudisco Cosimo , Bisicchia Salvatore
Published: December 2011

Intraosseous ganglia are benign cystic and often multiloculated lesions located in the subchondral bone. Only 13 cases around the shoulder have been described in the literature. These lesions are often asymptomatic, but, in cases located close to neurovascular structures or articular surfaces, they can be symptomatic, causing pain, neurologic dysfunction, or articular fractures.

This article reports the clinical, radiographic, and pathological findings of a 34-year-old man reporting shoulder pain during heavy working activities. At physical examination, his left shoulder showed complete active and passive range of motion but was painful in external rotation and extension. Tests for the evaluation of the rotator cuff were all negative. The anterior apprehension test provoked pain. The Constant-Murley score was 59 points. Radiographs, computed tomography (CT) scan, and magnetic resonance arthrography showed an elliptical-shaped osteolytic area in the anteroinferior portion of the glenoid extending to the anteroinferior glenoid margin. Leakage of the intra-articular contrast medium showed that the cyst had eroded the articular surface and was about to cause an intra-articular fracture of the glenoid. The patient was operated on with the suspicion of an intraosseous ganglion. The cyst was curetted carefully and packed with autologous bone from the proximal tibia and artificial bone chips. At 1-year follow-up, the patient was completely asymptomatic and reported no pain during his working activities. Physical examination was negative. Radiographs and CT scan showed a cystic lesion in the anteroinferior margin of the glenoid that was partially filled by bone.
Differing Prosthetic Alignment and Femoral Component Sizing Between 2 Computer-assisted CT-free Navigation Systems in TKA
Authors: Matsumoto Tomoyuki , Kubo Seiji , Muratsu Hirotsugu , Tsumura Nobuhiro , Ishida Kazunari , Matsushita Takehiko , Takayama Koji , Sasaki Hiroshi , Oka Shinya , Kurosaka Masahiro , Kuroda Ryosuke
Published: December 2011

We adopted a new computed tomography (CT)-free navigation system and noticed that, compared with our previous experience using a different type of CT-free navigation system that led to oversized and extended femoral component implanted compared with the conventional implantation, the femoral components were similarly implanted to the conventional method. The purpose of our study was to compare alignment and sizing with these 2 image-free systems and determine whether the method to determine the knee center could explain these differences in femoral component size and flexion of the component. Thirty posterior-stabilized total knee prostheses were implanted using the OrthoPilot CT-free navigation system (B. Braun-Aesculap, Tuttlingen, Germany). Postoperative coronal and sagittal long leg radiographs were retrospectively compared with those of a control group of 30 matched-paired total knee prostheses previously implanted using the VectorVision CT-free navigation system (Depuy–BrainLAB, Heimstetten, Germany). Sagittal alignment of the femoral component in the VectorVision group showed a significantly extended position compared with that in the OrthoPilot group. In addition, the size of the selected femoral component in the Vector Vision group was significantly larger than that in the OrthoPilot group. This discrepancy may be explained by the differences in the determined knee center, which influenced the postoperative implantation. When surgeons select a navigation system, the characteristics of each system should be taken into consideration.
Bisphosphonate Fractures as a Cause of Painful Total Hip Arthroplasty
Authors: Curtin Brian M. , Fehring Thomas K.
Published: December 2011

Osteoporotic fractures pose a significant health concern for postmenopausal women. Bisphosphonate therapy has been shown to decrease the risk of these fractures. The bisphosphonate alendronate was approved by the US Food and Drug Administration for use in the United States in 1995, but questions have recently arisen concerning low-energy subtrochanteric femur fractures sustained by chronic users. Although no definitive association or causality between bisphosphonates and these fractures has been established, numerous cautionary reports exist concerning the duration of use and safety of alendronate in osteoporotic patients.

This article reports 3 occurrences of bisphosphonate-associated atypical femur fractures as an etiology of periprosthetic hip pain in the total hip arthroplasty (THA) patient. These fractures are particularly concerning because these patients are often not advised to protect their weight bearing simply due to a painful THA and may sustain a catastrophic failure if not followed closely. Several theories have been suggested concerning the pathophysiology of atypical low-energy subtrochanteric fractures following bisphosphonate use. Each patient described in this article carried a diagnosis of rheumatoid arthritis and underwent chronic medical therapy; each patient experienced a delay in the diagnosis and onset of therapy due to low suspicion for bisphosphonate-associated fracture. This problem may become more common in the clinical setting; therefore, one must be vigilant and aware of this etiology of periprosthetic hip pain.
The Bioconcentration of Marine Debris in Pacific Garbage Patch
Authors: Pan Yi Ming , Zhang Zhang , Cao Qing Long
Published: December 2011

The toxin-containing marine pieces which are broken down from the plastics in Pacific Garbage Patch are easily eaten by primary consumers and be enriched through the food chain. So,the enrichment effect of marine debris in the patch of the primary consumer is studied in this research with the composite consideration of time and space. To the enrichment effect, the two-compartment bio-concentration model of primary consumer is constructed taking into account of the distribution of plastic garbage debris in water and biota. The result is that the increasing amount of the concentration of garbage debris in organisms is larger than that in seawater. So controlling the amount of waste which is the most fundamental measures should be implemented right now to prevent further deterioration of the situation. And dealing with the existing waste is also very necessary to prevent the further enrichment of the food chain.
The Research of Petroleum Contaminated Site Media for Adsorption of Petroleum Pollutant
Authors: Wang Wei , Su Xiao Si
Published: December 2011

Base on the geological, hydrogeological condition survey of petroleum contaminated site, we choose benzene, dichloromethane, chloroform as target pollutants, and research the adsorption characteristics of target pollutant on the site soil media. Mainly design adsorption kinetics experiment and isothermal adsorption experiment of target pollutant on sandy silt, silt and fine sand. The result of the experiments show that the finer media the adsorption equilibrium time is shorter, the equilibrium time is sandy silt chloroform >dichloromethane, Migration is dichloromethane > chloroform > benzene. To same pollutant, the maximum adsorption of target pollutant is sandy silt >silt >fine sand.
Three-Dimensional Damage Analysis of Concrete Surrounding the Spiral Case in the Nuozhadu Hydropower Station
Authors: Li Ze , Zhang Li Xiang
Published: December 2011

Studies have shown that the internal pressure of the spiral case could cause damage of the surrounding concrete, and the damage range and level are possible to grow with the repeated action of water hammer pressure. The security of spiral case structure may be adversely affected by damage of the surrounding concrete. In this paper, the case study of a spiral case which located in Nuozhadu hydropower station in Yunnan Province is presented. In order to analyze the damage effect of surrounding concrete under the repeated maximal water hammer pressure, a three-dimensional finite element model is established by ABAQUS software. In calculation, the contact elements are used to simulate the feature of frictional contact between steel liner and surrounding concrete, and the concrete damage plasticity constitutive model is adopted to describe the tensile characteristic of concrete. At last, according to the results of simulation, the damage range and level are investigated.
To Enhance the Production of Human-Like Collagen II by Amino Acid Addition Using Response Surface Methodology
Authors: Guo Lei , Luo Yan E , Fan Dai Di , Xu Ru
Published: December 2011

Amino acids, the basic unit of protein molecules, are closely related with biological activities. In order to enhance the expression of human-like collagen (HLC), amino acids were added into fermentation broth, and response surface methodology (RSM) to optimize the categories and the concentration of amino acids. The results of PB-design showed that only the dosage of alanine and glutamate had significant effects on the production of HLC. Quadratic polynomial models were established after analyzing the results of CCD-design. The optimal concentration of alanine and glutamate were 3.78gL-1、and 2.52g•L-1 respectively. Under the optimal cultivation condition the maximal production of human-like collagen could be up to 0.292g•L-1 which was 11.45% higher than that of the control group 0.262g•L-1 (the highest production of the former study).
Unilateral Versus Bilateral Kyphoplasty for Osteoporotic Vertebral Compression Fractures
Authors: Zhang Bin , Dai Min , Tang Ya Min
Published: December 2011

Study Design A retrospective study of patients who underwent kyphoplasty at a single institute. Objective To examine and compare the safety and long-term radiographic and clinical effects of unilateral or bilateral kyphoplasty to treat symptomatic vertebral compression fractures (VCF). Summary of Background Data Kyphoplasty (KP) involves placement of inﬂatable bone tamp via unilateral and bilateral approaches. Few randomized study comparing the radiographic and clinical outcomes using unilateral and bilateral approaches was reported. Methods 50 patients with osteoporotic vertebral compression fractures (VCF) were allocated into two groups adopting unilateral or bilateral kyphoplasty. Preoperative and postoperative pain scores, Vertebral body height were compared and analyzed. Results Both unilateral and bilateral kyphoplasty resulted in signiﬁcant pain reduction. Signiﬁcant increases of midline vertebral body height were recorded for both groups after surgery and maintained for the period of follow-up. Asymptomatic cement extravasation occurred in 8 of 50 patients, and 2 patients developed additional fractures at untreated levels during the period of follow-up. Conclusions Both unilateral and bilateral KP can improve clinical effects of osteoporotic VCF and result in signiﬁcant vertebral height restoration for at least 18 months after treatment.
"Resource Saving and Environment Friendly" Urban Planning Multiple Decision-Making Research
Authors: Wang Jian Hua , Huang Jun Zhou
Published: December 2011

In this paper, lead into fuzzy theory and set up the decision-making model of the quality project（U，V，R）of " two type” town urban planning based on the multi-factors. The model Including project planning factors set = , judge factor V= for each element of the planning factors set and Multiple fuzzy decision matrix .the test results prove that the fuzzy theory is feasible with individual characteristics and the quality of decision-making of "two types" of urban planning
Adsorption of Copper (II) from Solution by Wheat Husk in Batch Mode
Authors: Liu Ya Li , Zhao Xiu Rong , Ma Dan , Li Yu Fei , Han Run Ping
Published: December 2011

Wheat husk, an agriculture byproduct, was used to adsorb copper (II) from aqueous solutions. Variables of the system, including contact time, pH, salt concentration, and equilibrium copper concentration, were adopted to study their effects on copper (II) adsorption. The results showed that coexisted salt was not favor of adsorption and pH value near 5 was favor of adsorption. Adsorbent quantity of copper onto wheat husk increased with the equilibrium concentration increasing. The kinetic process can be predicted by Elovich model while the equilibrium data was fitted better by Freundlich model.
A Study on Ceramsite Pre-Wetted Time to Work on the Performance of Ceramsite Aggregate Concrete
Authors: Yang Wei Jun , Jiang Peng Xiao , Wang Yan
Published: December 2011

This paper analyzes the reasons for delamination of ceramsite aggregate concrete mixture, obtained influencing factors of working performance based on the study of equations of lightweight aggregate motion. Moreover, by experimental study of the different pre-wetted time conditions on working performance, a reasonable pre-wetted time of ceramsite before ceramsite aggregate concrete for construction is summarized as well.
Analysis of Internet Bar Use Evaporative Air-Conditioning and Ventilation of Thermal Comfort
Authors: Xiang Huang , Wang Wei , Wu Sheng
Published: December 2011

The factors affecting indoor thermal environment are briefly introduced in this article, and one Internet bar was tested and analyzed that used evaporative air-conditioning in lanzhou, gansu. Meanwhile, through the air temperature, the relative humidity and air velocity of sensitivity factors were analyzed that heat sensation to human body, changed the heat sensation for people's from qualitative to the quantitative. As one way and the basis has provided for the improvement room internal heat environment quality.
Comparision of Bupleurum scorzoneri folium Willd. Grouping from Different Habitats Based on Pattern Recognition with R Software
Authors: Rui Wen , Chen Hong Yuan , Feng Yi Fan , Shi Zhong Feng , Jiang Miao Miao
Published: December 2011

Bupleurum scorzoneri folium Willd.(BSFW) is a traditional Chinese medicine which is widely distributed in China. To evaluate the quality of BSFW from different habitats, samples from 5 different areas in China were determined by UPLC/MS. The chemical data were dealed with hierarchical clustering, PCA, SPCA, PLSDA and SPLSDA using R software. The results show that these pattern recognition methods can fully reflect the chemical composition of different areas of BSFW, which make it possible to control the quality.
Complexs of Poly(1-vinylimidazole-co-methyl methacrylate) and Copper Ion as Catalysts for the Oxidation of Ethylbenzene
Authors: Li Gui Zhen , Li Jun Bo , Han Chen , Zhang Jun Kai , Liang Li Juan , Zhou Hui Yun , Liang Ju
Published: December 2011

This paper was reported a polymeric support metal catalyst and its application in oxidation of ethylbenzene with molecular oxygen. The Poly(1-vinylimidazole-co-methyl methacrylate) copolymer (PVM) was directly mixed with copper sulfate solution to prepare the catalyst of Cu(II)-PVM. The appropriate reaction temperature and amount of catalyst were 130°C and 0.2g. Recycling studies indicated that the catalyst could be recycled at least four times without significant decrease of catalytic activity.
De-Colorization of Acid Deep Blue P-2RB by Boron-Doped Diamond Micro-Array Disc Electrode
Authors: Zhong Deng Jie , Xu Yun Lan , Jia Jin Ping
Published: December 2011

In this work, the color removal of Acid Deep Blue P-2RB (ADBP-2RB) was experimentally investigated using boron-doped diamond (BDD) micro-array disc electrode. The results show that the BDD micro-array electrode rotating electrochemical disc process could efficiently remove the color by 95% after 60-min electrolysis. The influence of factors such as the voltage, disc rotating speed, pH, and treating time was explored. The de-colorization mechanism was studied with UV-vis spectra.
Degradation of 3-Nitrophenol with Sodium Acetate as Co-Substrate in an Upflow Anaerobic Sludge Blanket Reactor
Authors: She Zong Lian , Li Lei Lei , Zhu Ying Jie , Xie Tian , Jiang Li Na , Gao Meng Chun
Published: December 2011

The effects on degrading 3-nitrophenol (3-NP) with sodium acetate as co-substrate under the conditions of laboratory-scale upflow anaerobic sludge blanket (UASB) reactor was investigated at an operating temperature of 35±1°C in this study. The results showed that the optimum influent 3-NP concentration was 71.6mg/L when keeping influent COD concentration for 2500 mg/L and hydraulic retention time (HRT) for 30 h. At the stage of reducing influent COD concentration, all of the 3-NP removal rates were more than 95%; while the conversion rate of 3-aminophenol (3-AP) decreased from 61.4% to 0.2%. Meanwhile, the reduction of HRT also had significantly effects on the treatment effect of 3-NP. With the decreases of HRT, COD removal dropped to 49.7% from 82.7%.
Electrostatic Discharge of Aviation Oil and Damage Protection
Authors: Tang Wei Hong , Yang Hong Wei , Yang Shi Liang , Wu Chao
Published: December 2011

The generation of static electricity of aviation oils is based on the theory of double electrical layer on the boundary layer formed by charged particles in the liquid.The theory of electric double layer is used to explain reasons for the static electricity of aviation oil and expound main factors affecting its generation including conductivity, impurities, water, pipeline material and wall roughness; propose in details measures on the prevention of static electricity of aviation oil, including adding anti-static additives, controlling the oil flow rate, fuel control mode, electrostatic grounding and bridging and installing the static moderator and static eliminator devices, etc.
Ethanol Extraction of Flavonoids from Mungbean Skin after Twin-Screw Extrusion Process
Authors: Du Bing , Jiao Yan Li , Huang Zhi Qiang , Mao Lian Kai , Fan Yuan Yuan , Wu Hai Xiong , Jiang Long Bo , Yang Gong Ming
Published: December 2011

In order to increase the extraction rate of flavonoids from mungbean skin, twin-screw extrusion process was used as a pretreatment method. After optimizing conditions of twin-screw extrusion process, effects on ethanol extracting flavonoids were studied. Results revealed that the best extrusion conditions were: screw speed at 268r/min, extrusion temperature at 115~120°C, feed moisture at 17% and feeding rate at 726g/min. Under these conditions, the optimum condition for ethanol extraction of flavonoids was: using 38% ethanol solution at a material-liquid ratio of 1:20 at 77.5 °C with 2.5 h. The average extraction rate of flavonoids from mungbean skin was 3.14%, comparing to rate of un-extruded material 2.07%, extraction rate raised by 51.5%. This pretreatment can destroy the density structure of mungbean skin which has great effect on the increase of extraction rate of flavonoids.
Ferric Nitrate Suppresses Internal Phosphorus Loading in Municipal River
Authors: Huang Jian Jun , Li Yu Hong , Gao Ya Jie
Published: December 2011

The application of nitrate is an accepted procedure to manage eutrophication municipal rivers by controlling the phosphorus release from sediments into overlying water and offering electron acceptor for microorganism metabolism. In situ laboratory studies were carried out in simulated reactors to evaluate the potential of ferric nitrate for remediation municipal river sediment. Ferric nitrate could greatly improve the ability of bio-treatment properties for sediment. Two dose remediation experiment of ferric nitrate (70g and 35g per square meter) was carried out lasting 28 weeks. Observations showed that ferric nitrate could suppressed the release of phosphorus from the sediments. At the same time the TN concentration could reduce to common level compared to blank reactor by denitrification. As a whole the dose of 35g per square meter ferric nitrate is better. The results suggest that knowledge of a municipal river’s nitrogen budget may be a useful tool in the design of municipal river remediation efforts.
Influences to Forest Fire Occurrence of Climate Change: A Study in Ta He Forestry Bureau in Great Xing’an Mountain
Authors: Zeng Tao , Huang Hui
Published: December 2011

Forest fire is one of the most important ecological factors in the forest ecosystem. The Daxinanling forest region has not only the largest forest areas, but also the biggest forest fire burned area in China. By analyzing the recorded climate and forest fire data of Ta He forestry bureau from 1974 to 2004, the following results can be concluded: (1) There were 298 forest fires recorded by Ta He forestry bureau during 31 years and the burned area were 1.63 million hectares totally with 9.6 forest fires per year, unpredictable and short fire cycle as characters. (2) According to the occurrence time of forest fires, the Julian date concentrated between 102~181 and 240~293, corresponding April 12th to June 30th and August 28th to October 20th, which were spring and autumn fire prevention periods. Major fires mainly occurred in spring of 1974~1982, 1986~1987, 1993, and 1998~2002. The major fires cycle were 4 to 5 years. (3) The related indices of temperature, relative humidity, rainfall, and wind speed recorded in June in Ta He forestry bureau were 0.3929, 0.5274, 0.6136 and 0.1679. Temperature, relative humidity and rainfall factors in June had obvious linear relationships to forest fires, while the relationship between wind speed and forest fires is unobvious.
Mechanism Study on Forming Flake Silver Tin-Oxide Composite Powder
Authors: Wang Yan , Du Zuo Juan
Published: December 2011

Silver powder and silver-tin oxide composite powder were synthesized by hydrothermal method. The powders were characterized by XRD and SEM. The results show that there are macroscopic appearance and microscopic structure differences between two kinds of powders. Silver powder is gray and spherical particles with 3μm diameter, and silver-tin oxide composite powder is black ash and mainly flake particles about 0.3μm in thickness. Silver crystal in silver tin-oxide composite powder is preferentially oriented in the (111) crystal plane and its oriented index is 2.581. However oriented index of silver crystal in silver powder is 1.048 which shows the crystal isn’t preferentially oriented in the (111) crystal plane. That crystal lattice parameter of silver crystal in silver tin oxide composite powder is 0.409 34 nm larger than 0.408 68 nm of silver powder. The mechanism analysis shows that the hydrogen bonds among Sn(OH)62- and Ag(SO3)23- complexes are inhere factor which result in the formation of flake silver tin-oxide composite powder.
Mine Dust Concentration Measurement Method Based on Model of Dust Concentration and Humidity
Authors: Zhuang Li Chen , Pang Ming Xiang , Cheng Xue Zhen
Published: December 2011

According to the coal mine underground work place humidity changes affect the measurement precision of dust concentration, improper spray cause coal with the water loss and wastes a lot of water resources, the paper put forward a correction factor of dust concentration based on the relative humidity, establish the relation model of concentration and humidity. The test results show that: the dust concentration correction factor and relationship model of concentration and humidity are effective and scientific, it has better practicability to solve the problem of underground coal mine.
High-Definition Imaging and Processing System Based on CMOS Image Sensor
Authors: Wang Wei Ling
Published: December 2011

A high-definition imaging and processing system is presented, which consists of a color CMOS image sensor, SRAM, CPLD and DSP. The CPLD implements the logic and timing control to the system. SRAM stores the image data, and DSP controls the image acquisition system through the SCCB. The timing sequence of the CMOS image sensor OV9620 is analyzed. The imaging part and the high speed image data memory unit are designed. The hardware design of the imaging system and processing algorithm are given. Because the CMOS digital cameras use color filter arrays to sample different spectral components, such as red, green, and blue, at the location of each pixel only one color sample is taken, and the other colors must be interpolated from neighboring samples. We use the edge-oriented adaptive interpolation algorithm for the edge pixels and bilinear interpolation algorithm for the non-edge pixels to improve the visual image quality. This method can get high processing speed, decrease the computational complexity, and effectively preserve the image edges.
Organic/Inorganic Self-Assembled Film Based on a Perylenetetracarboxylic Diimide Derivative/CdS
Authors: Li Da Pan , Wang Ying Zi , Chen Yan Li
Published: December 2011

A perylenetetracarboxylic diimide derivative, N,N,N′,N′-tetra(hydroxyethyl)-1,7-di (4-tert-butylphenol)perylene-3,4:9,10-tetracarboxylic diimide(THPDI), was synthesized and covalently self-assembled as a monolayer on the modified a quartz surface. UV-vis absorption and IR spectra revealed the H-aggregate nature of THPDI molecules in the obtained thin solid film. With this thin solid film as a template, CdS nanoparticles were deposited on it in situ, which were characterized by electronic absorption, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The morphology of CdS nanoparticles is disklike, and the diameter is ca. 150 nm as determined by AFM. The present result provides an effective and new method toward directed growth of specific morphologies of the nanoparticles. It is believed helpful for designing and preparing molecular-based nano-electronic and nano-optoelectronic devices with good performance.
Penetration Performance of Melt-Blown Polypropylene Electret Nonwoven Web against DEHS Aerosols
Authors: Xiao Hui Ming , Chen Gang Jin , Song Ye Ping
Published: December 2011

High filtration efficiency of melt-blown polypropylene nonwoven web used as air filter extremely depends on its elelctret characteristics. In this paper, penetration performance of DEHS(diethyl hexyl sebacate) aerosol while flowing through melt-blown polypropylene electret nonwoven web is studied by the method of aerosol penetration measurement as a function of particle size, and the contribution of mechanical and electrostatic mechanism to its capture ability is proposed. The stability of filtration performance after exposure to DEHS for a period of time is measured and the impact of DEHS and other challenge aerosols with different chemical properties on filtration performance is compared. The results show that the higher filtration efficiency of melt-blown polypropylene electret nonwoven web mainly depends on its high electret charge. Aerosol penetration drops off with the increase of aerosol particle size and decreases in the order of basic weight sequence of 20, 40 and 60 g/m2. The most penetration particle size (MPPS) appears at 0.08 m in diameter. The electret charge of the web was cleared away during the course of exposure to challenge aerosol after 5 minutes. The electriferous property of aerosol particle also influences the filtration performance of polypropylene electret nonwoven web. The electret web displays the best filtration performance for ionized aerosol.
Preliminary Study of Carbon Emission Reduction Benefits of MSW Separate Collection in Liuzhou
Authors: Zuo Gang , Chen Hai Bin , Hu Yang , Li Mei , Li Xiao Feng
Published: December 2011

In order to quantify the positive effects of MSW separate collection to low-carbon development, a method was proposed to estimate the reduction of carbon emission about this initiative. In the estimation process, factors such as waste composition and terminal treatment process have played an important role. The output and composition of MSW in Liuzhou in 2010 were taken as an example in the paper, and sanitary landfill was the main disposal technology there. The reduction of carbon emission was estimated on the assumption that MSW separate collection was carried out well in Liuzhou, of which the result was 3.32×108kg CO2-eq. for the whole year, showing the multiple benefits of separate collection in the social, economic and environmental aspects.
Preparation of Nitrogen-Doped TiO2 /Slide Glass Photocatalyst and Application for Determination of Chemical Oxygen Demand of Pesticide Phoxim in Circulating Photoreactor
Authors: Niu Jin Fen , Yao Bing Hua , Jin Zeng Fu
Published: December 2011

Nitrogen-doped TiO2 (N-TiO2) film photo catalyst loaded on slide glass was prepared considering ammonia (NH3) as nitrogen sources by sol-gel method. X-ray diffraction and SEM were employed to characterize the morphology, structure of the N-TiO2 photocatalyst. The chemical oxygen demand (COD) with N-TiO2 film photocatalyst experiment by degrading pesticide phoxim in aqueous solution under UV light by a self-design circulating photoreactor indicated that the degradation efficiency of N-TiO2 film photo catalyst was depended on the layer numbers, flow velocity of solution and the category of light sources. The influence factors of preparation conditions were optimized. The optimum degradation efficiencies of COD decreased to 56.3 mg/L by using N-TiO2 film photo catalyst in 60 min reaction period. In addition, the N-TiO2 film photo catalyst has better photocatalytic activity under sunlight irradiation.
Preparation of Peppermint Oil Sustained Microcpasules by Intra-Liquid Desiccation
Authors: Yue Hong Kun , Chang Ming , Zhou Ran , Li Jing
Published: December 2011

Objective: Peppermint oil sustained microcapsules were prepared by intra-liquid desiccation. Methods: The orthogonal design methods were used to get the optimal prescription by uesing ethyl cellulose as materials and sodium dodecyl sulfate as emlsifier. Results: The best prescription of peppermint oil sustained microcapsules were as follows: 0.1mL peppermint oil, ethyl cellulose : drug was 10:1, sodium dodecyl sulfate was 0.11 g, ethyl acetate was 16 mL, distilled water was 260 mL. Conclusion: The method was simple and easy to be controlled, reproducibility was good.
Preparation of the Modified Mesoporous Beta Materials and its Application in Wet Catalytic Degradation of Methyl Orange
Authors: Xu Jun Qiang , Guo Fang , Li Jun , Quan Xue Jun
Published: December 2011

The heterogeneous beta-supported transition metal catalysts were prepared by incipient wetness impregnation. The catalytic oxidation degradation of methyl orange was carried over the heterogeneous catalyst in the peroxide catalytic oxidation process. The pure beta materials showed quick adsorption equilibrium characterization, and the adsorption ratio was only 30%. Compared with the adsorption of the pure beta carrier, the Cu/beta and Fe/beta catalyst could effectively degrade methyl orange with high catalytic activity and easy catalyst separation from the solution using hydrogen peroxide as oxide. The methyl orange removal efficiency could reach 99% in the optimum experimental conditions. The optimal mental content for Cu, Ag, Mn, Fe and Co was 5%, 8%, 0.3%, 1% and 0.3%, respectively.
Relationship Research between Crystallization Quantity of Emulsion Explosive and Desensitization Degree under Dynamic Pressure
Authors: Huang Wen Yao , Wu Hong Bo , Yan Shi Long
Published: December 2011

Explosive emulsion was applied dynamic pressure using by underwater explosion test apparatus，and its pressure desensitization degree was calculated. The crystallization quantity was measured by water dissolution method after emulsion explosive was pressed, and the relationship of crystallization quantity of emulsion explosive and desensitization degree was analyzed. Experimental results show that the crystallization quantity increases with dynamic pressure rising, and the desensitization degree increases, too. The crystallization quantity is relation to the type of sensitizing agent, the crystallization quantity of emulsion explosive sensitized by GMB is less than that of expanded perlite.