bluuebunny/crossref_metadata_2025 huggingface dataset:
Pulp yield and mineral content of commercial hybrids of yellow passion fruits
Authors: Tupinambá Daiva Domenech , Costa Ana Maria , Cohen Kelly de Oliveira , Paes Norma Santos , Faleiro Fábio Gelape , Campos Angélica Vieira Sousa , Santos André Lorena de Barros , Silva Karina Nascimento da , Junqueira Nilton Tadeu Vilela
Published: July 2012

Physical analyses and an analysis of the mineral content were carried out by peroxide-perchloric wet-digestion, taking readings using inductively coupled plasma-atomic emission spectrometry (ICP-AES) and measurements using an analytical balance and digital paquimeter, of three commercial hybrids of Passiflora edulis f. flavicarpa Deg.: BRS Sol do Cerrado, BRS Ouro Vermelho and BRS Gigante Amarelo, cultivated and harvested from the experimental area of Embrapa Cerrados, Planaltina, DF, Brazil, in October/2007. Eighteen fruits were evaluated for each hybrid, and presented weights and dimensions superior to those found in the scientific literature, without significant differences between the hybrids. Sol do Cerrado showed less weight loss post storage when compared to the other hybrids, but no significant differences were found with respect to the other physical parameters studied. The mineral contents found in the hybrids were higher than the values found in the scientific literature and in the Brazilian food composition tables (TACO) elaborated by NEPA-UNICAMP. The Sol do Cerrado had a higher iron content than the other hybrids. The hybrids are excellent sources of minerals, especially in comparison with the frozen pulp sold in supermarkets.
Caracterização cinética e termodinâmica de β-galactosidase de Kluyveromyces marxianus CCT 7082 fracionada com sulfato de amônio
Authors: Heidtmann Renata Bemvenuti , Duarte Susan Hartwig , Pereira Lidiane Pereira de , Braga Anna Rafaela Cavalcante , Kalil Susana Juliano
Published: July 2012

A β-galactosidase é uma enzima importante que atua na hidrólise da lactose, podendo ser empregada na obtenção de alimentos destinados a consumidores intolerantes a esse dissacarídeo. A levedura Kluyveromyces marxianus apresenta bom rendimento de crescimento, além de ser um micro-organismo seguro em aplicações industriais, e tem sido utilizada para produção da enzima por cultivo submerso. A β-galactosidase obtida foi fracionada com sulfato de amônio e caracterizada quanto a temperatura e pH ótimos, estabilidade térmica, valores D e z, e parâmetros cinéticos e termodinâmicos. A temperatura e pH ótimos foram de 45-50 °C e 7,0, respectivamente. A energia de ativação da reação enzimática foi de 9,8 kcal.mol-1 e da reação de desativação, 64,2 kcal.mol-1. Os valores de Km e Vmax obtidos foram de 3,7 mM e 99,0 U.mL-1, respectivamente. A energia livre de Gibbs reduziu com o aumento de temperatura, sendo a enzima mais estável a 30 °C (∆G* = 106,8 kJ.mol-1). A entalpia foi de 313,04 kJ.mol-1 e a entropia 0,68 kJ.mol-1.k-1. O valor D confirmou que a enzima foi mais estável em temperaturas próximas de 30 °C (D = 11.513,0 min) e o valor z foi de 5,8 °C.
Nota Científica: utilização da pectina, proteínas do soro de queijo e água de maceração de milho para a produção de proteases por Bacillus sp. termofílico
Authors: Ladeira Silvania Alves , Delatorre Andréia Boechat , Andrade Marcela Vicente Vieira , Martins Meire Lelis Leal
Published: July 2012

As enzimas proteolíticas termoestáveis produzidas por microrganismos do gênero Bacillus possuem grande importância comercial, sendo sua aplicação predominante (35%) na indústria de detergentes. Neste trabalho, foi avaliada a produção de proteases pelo termofílico Bacillus sp. SMIA-2, utilizando-se substratos de baixo custo. A fim de verificar a utilidade da protease para aplicações industriais, a estabilidade e a atividade da enzima a diferentes valores de pH e temperatura foram também estudadas. A atividade da protease secretada por Bacillus sp. SMIA-2 em culturas submersas contendo 0,5% (m/v) de pectina de maçã, 0,1% (m/v) de proteínas do soro e 0,3% (m/v) de água de maceração de milho foi máxima após 24 h de incubação da cultura, com níveis de 54,3 U.mg-1 Proteína. A redução na concentração da pectina para 0,3% (m/v) e o aumento nos níveis das proteínas do soro para 0,3% (m/v) no meio de cultura aumentaram a produção da protease, que alcançou sua máxima atividade em 30 h, com níveis de 72,2 U.mg-1 Proteína. Estudos sobre a protease revelaram que as suas características mais importantes foram a alta temperatura ótima para atividade da enzima (70 °C) e a alta estabilidade em uma grande faixa de pH. A protease reteve em torno de 80% de sua atividade original quando incubada à temperatura ambiente por 2 h na faixa de pH entre 6,0 e 12,0. Essas propriedades constituem importantes vantagens para um possível uso da enzima em indústrias de detergentes.
A feather‐precipitation hydrogen isoscape model for New Zealand: implications for eco‐forensics
Authors: Rogers Karyne M. , Wassenaar Leonard I. , Soto David X. , Bartle J. A.
Published: July 2012

Feathers were sampled from extant museum archived birds of known origin to determine feather hydrogen isotopes (δ2Hf) in order to assign their origin and location over time by a comparison with a recently constructed model precipitation (δ2Hp) isoscape. We used feathers from two non‐migratory bird species that are widely distributed around New Zealand, Tui (Prosthemadera novaeseelandiae) and California Quail (Callipepla californica). Feathers were sampled from archived birds that were collected between 1880 and 2006 obtained from three New Zealand museum collections located at Auckland, Wellington and Christchurch. Forensic isotopic assays of feather from known locations were compared with the precipitation isoscape model with the aim of establishing a relationship which could be applied to link feathers from unprovenanced historical Māori cloaks held in museums to their region of manufacture (and potentially an associated tribe or iwi) in New Zealand. In order to test this approach, we assessed the modelled δ2Hp values within the distribution area of each tribe. Distribution areas of tribes were isotopically different and in the future, this tool will help to link to feathers from historical artefacts, reconnecting them to their tribal origin.
Clinical Outcomes and Predictors for ESRD and Mortality in Primary GN
Authors: Chou Yu-Hsiang , Lien Yu-Chung , Hu Fu-Chang , Lin Wei-Chou , Kao Chih-Chin , Lai Chun-Fu , Chiang Wen-Chih , Lin Shuei-Liong , Tsai Tun-Jun , Wu Kwan-Dun , Chen Yung-Ming
Published: July 2012

Background and objectives

Relatively little is known about the long-term outcomes of different histologic types of primary glomerulonephritis in Asian populations.

Design, setting, participants, & measurements

From 1993 to 2006, 987 patients undergoing renal biopsy were studied, and 580 patients (mean age=44.4 years, male=58.5%) with the four most common forms of glomerulonephritis (membranous nephropathy, focal and segmental glomerulosclerosis, IgA nephropathy, and minimal change disease) were selected for analysis. Median follow-up period was 5.9 (interquartile range=5.7) years.

Results

The focal and segmental glomerulosclerosis group displayed the highest incidence of ESRD (25.8%) and the fastest decline of estimated GFR (4.6 ml/min per 1.73 m2 per year). The IgA nephropathy group also had a higher rate of ESRD than the membranous nephropathy patients (19.2% versus 4.3%, P<0.001). In contrast, the membranous nephropathy group exhibited an overall death rate similar to the focal and segmental glomerulosclerosis group (17.2% versus 14.4%) but higher than the IgA nephropathy and minimal change disease patients (4.6% and 3.7%, respectively, P<0.001). The most powerful predictor for ESRD was focal and segmental glomerulosclerosis, whereas the strongest predictor for all-cause mortality was membranous nephropathy with higher proteinuria. Protectors against ESRD included male sex and higher hemoglobin.

Conclusions

Most predictors for ESRD and overall mortality found in this ethnic Chinese cohort were similar to other studies. However, some risk factors linked with distinct glomerular pathologies displayed differential clinical outcomes.
Choroid plexus papilloma in a girl with hypomelanosis of Ito
Authors: Morigaki Ryoma , Pooh Kyong-Hon , Shouno Kenji , Taniguchi Hidekazu , Endo Shouichi , Nakagawa Yoshinobu
Published: July 2012

The authors report a case of choroid plexus papilloma in a girl with hypomelanosis of Ito, and they review the literature in brief. Hypomelanosis of Ito is a rare neurocutaneous syndrome characterized by cutaneous hypopigmented whorls, streaks, and patches along lines of Blaschko. Most patients exhibit CNS manifestations, including psychomotor retardation, seizures, hypotonia, and ataxia. A 6-year-old girl with hypomelanosis of Ito was referred to the authors' hospital with bilateral tumors in the lateral ventricles. The right lateral ventricle tumor was surgically removed. Immunohistochemical investigations revealed the tumor to be a choroid plexus papilloma (WHO Grade I). A chromosomal investigation revealed that the tumor tissue demonstrated a large loss of heterozygosity at chromosome 10. The case reported here serves as a reminder that de novo brain tumors may arise in patients with chromosomal mosaicism.
Treatment strategy in a child with a retained bullet in the cerebellomedullary cistern
Authors: de Oliveira Barbosa Marcílio Diogo , de Bellis Thiago , Pousa Marcelo Sampaio , da Silva Rodrigo Sodré Calheiros , Garcia Flávio Assad , Acioly Marcus André
Published: July 2012

A 6-year-old girl was admitted to our emergency room because of a gunshot wound in the posterior craniocervical junction. On admission, she was alert, but left hemiplegia and right hemiparesis were noted. Cranial CT scanning showed a retained bullet in the cerebellomedullary cistern without bone destruction. Moreover, fourth ventricle hemorrhage was observed. There were no signs of acute hydrocephalus. The patient underwent suboccipital craniectomy and C-1 laminectomy for bullet removal. Postoperatively, the patient experienced significant neurological improvement. To the best of the authors' knowledge, this is the first documented case of a patient with a retained bullet in the cerebellomedullary cistern. The management strategies in such a unique case are discussed.
Pearls and pitfalls of intraarterial chemotherapy for retinoblastoma
Authors: Jabbour Pascal , Chalouhi Nohra , Tjoumakaris Stavropoula , Gonzalez L. Fernando , Dumont Aaron S. , Chitale Rohan , Rosenwasser Robert , Bianciotto Carlos G. , Shields Carol
Published: July 2012

Retinoblastoma is a deadly eye cancer in children, leading to death in 50%–70% of children in undeveloped nations who are diagnosed with it. This malignancy is the most common intraocular tumor in childhood worldwide. The good prognosis in developed nations is related to early detection and advanced treatments. With the advent of intraarterial chemotherapy, neurosurgeons have taken a central role in the treatment of this pediatric condition. Intraarterial chemotherapy is a novel treatment for retinoblastoma whereby chemotherapeutic agents are precisely delivered into the ophthalmic artery, minimizing systemic toxicity. This procedure has shown impressive results and has allowed a dramatic decrease in the rate of enucleation (eye removal) in advanced and refractory retinoblastoma. Recent reports have raised some concerns about the risk of ocular vasculopathy, radiation-related toxicity, and the potential for metastatic disease after intraarterial chemotherapy. In the authors' experience of more than 3 years, tumor control is excellent with globe salvage at 67% and vascular events less than 5%, mostly related to improvement in technique. The role of this novel approach in the management of retinoblastoma has yet to be defined. As more centers are adopting the technique, the topic will decidedly become the focus of intensive future research. In this paper, the authors review and discuss current data regarding intraarterial chemotherapy for retinoblastoma.
Temporal dynamics of microparticle elevation following subarachnoid hemorrhage
Authors: Sanborn Matthew R. , Thom Stephen R. , Bohman Leif-Erik , Stein Sherman C. , Levine Joshua M. , Milovanova Tatyana , Maloney-Wilensky Eileen , Frangos Suzanne , Kumar Monisha A.
Published: July 2012

Object

Microparticles (MPs), small membrane fragments shed from various cell types, have been implicated in thrombosis, inflammation, and endothelial dysfunction. Their involvement in subarachnoid hemorrhage (SAH) and the development of cerebral infarction and clinical deterioration caused by delayed cerebral ischemia (DCI) remain ill defined. The authors sought to quantify the magnitude of elevations in MPs, delineate the temporal dynamics of elevation, and analyze the correlation between MPs and DCI in patients with SAH.

Methods

On the day of hemorrhage and on Days 1, 3, 5, 7, and 10 after hemorrhage, peripheral blood samples were drawn from 22 patients with SAH. Plasma samples were labeled with Annexin V and CD142, CD41a, CD235a, CD146, CD66b, or von Willebrand factor (vWF) and were quantified by flow cytometry. Clinical data, including the 3-month extended Glasgow Outcome Scale (GOS-E) scores, infarction as measured on MRI at 14 days after SAH, and vasospasm as measured by transcranial Doppler ultrasonography and angiography, were collected and compared with the MP burden.

Results

When averaged over time, all MP subtypes were elevated relative to controls. The CD235a+(erythrocyte)−, CD66b+(neutrophil)−, and vWF-associated MPs peaked on the day of hemorrhage and quickly declined. The CD142+(tissue factor [TF])–associated MPs and CD146+(endothelial cell)–associated MPs were significantly elevated throughout the study period. There was a strong negative correlation between TF-expressing and endothelial-derived MPs at Day 1 after SAH and the risk of infarction at Day 14 after SAH.

Conclusions

Microparticles of various subtypes are elevated following SAH; however, the temporal profile of this elevation varies by subtype. Those subtypes closely associated with thrombosis and endothelial dysfunction, for example, CD145+(TF)-associated MPs and CD146+(endothelial cell)–associated MPs, had the most durable response and demonstrated a significant negative correlation with radiographic infarction at 14 days after SAH. Levels of these MPs predict infarction as early as Day 1 post-SAH.
Ectopic recurrent craniopharyngioma of the frontal bone
Authors: Jakobs Martin , Orakcioglu Berk
Published: July 2012

Ectopic recurrence of craniopharyngioma is a rare phenomenon after transcranial resection of the primary tumor. The authors present a case of ectopic recurrent adamantinomatous craniopharyngioma of the frontal bone resected 16 years after initial transcranial resection of the primary tumor. The lesion was first radiographically described 12 years after surgery and was adjacent to the osteosynthesis plate that had been implanted at the craniotomy site. The recurrent craniopharyngioma was totally resected via a lateral eyebrow approach. No infiltration of the meninges or the brain was detected.

Only 50 cases of ectopic recurrent craniopharyngioma have been described to date, with the present case being the first one with recurrence located at the skull bone. So far 2 mechanisms have been described: contamination with tumor cells alongside the surgical tract and spreading via CSF and the subarachnoid space.

The authors reviewed the literature, provided the largest collection of cases so far, and performed basic statistical analysis regarding ectopic recurrence. Pediatric and adult patients as well as male and female ones are affected equally by this phenomenon. The mean time of ectopic recurrence after initial surgery was 7.1 years. Ectopic recurrence, although rare, should always be considered in a patient with a newly diagnosed intracranial lesion who has undergone transcranial craniopharyngioma resection before.
Neurosurgery and consciousness: historical sketch and future possibilities
Authors: Hasegawa Harutomo , Jamieson Graham A. , Ashkan Keyoumars
Published: July 2012

Neurosurgery has played an important role in the development of neuroscience and the science of consciousness. In this paper, the authors reflect on some of the historical contributions of neurosurgeons to the science of consciousness and discuss the ways in which clinical neurosurgery can contribute to the science of consciousness in the 21st century. An approach to the “hard problem” is proposed based on the principles of psychophysics, and the opportunities offered by intracranial recording and stimulation in patients capable of reporting changes in subjective experience are discussed. Such an approach will allow the systematic study and description of the bridging relationships between neurobiology and conscious experience.
Hydatid cyst of the ambient cistern radiologically mimicking an arachnoid cyst
Authors: Şanlı Ahmet Metin , Türkoğlu Erhan , Kertmen Hayri , Gürer Bora
Published: July 2012

Hydatid cysts of the posterior fossa are extremely rare. Intracranial hydatid cysts are more common in children and occur more frequently in the supratentorial space. A 7-year-old boy was admitted to the emergency department because of intense headache, nausea, vomiting, and progressive drowsiness that developed within the period of a week. On radiological examination a round, 2.5 × 2.5-cm cystic lesion appeared in the ambient cistern and caused hydrocephalus as a result of extrinsic aqueductal stenosis. The cyst was successfully removed using the puncture, aspiration, irrigation, and resection technique via an infratentorial-supracerebellar approach with the patient in the sitting position.

The authors here described an unusual case of a hydatid cyst in the left ambient cistern with hydrocephalus due to extrinsic aqueductal stenosis, which seems to be the first such case in the literature. Hydatid cyst may be considered in the differential diagnosis of arachnoid cysts of the quadrigeminal cistern to determine which surgical procedure to perform and to avoid unexpected complications.
An Evaluation of Teaching Physical Examination to Pharmacists
Authors: Barry Arden R. , McCarthy Lisa , Nelson Cindy L. , Pearson Glen J.
Published: July 2012

Background:

Evolving scope of practice has led pharmacists to develop new skills traditionally performed by other members of the health care team, including physical examination (PE). A session to teach PE skills to pharmacists was created as part of a professional development program. The purpose of this study was to evaluate participants' perception of, barriers to and confidence in performing PE before and after the session.

Methods:

A 2-hour session introduced participants to PE as part of a primary care professional development program. Surveys were administered before and after the session, and then 4 weeks later. Participants' confidence in performing PE was assessed using a 4-point unipolar scale questionnaire, and mean weighted responses were compared between the pre- and post-session surveys.

Results:

Thirty-four pharmacists participated in the study. At baseline, 82.4% had never received formal PE education, but 38.2% performed PE in practice, including blood pressure measurement. Eighty-two percent of participants identified barriers to performing PE, the most common being lack of formal training. Participants' confidence with PE significantly increased between the pre- and post-session surveys, except for comfort with making drug therapy interventions based on PE findings. Forty-three percent of participants completed the 4-week follow-up survey, which demonstrated that the use of PE in practice remained unchanged.

Conclusion:

Prior to the session, most participants did not use PE in their practice, primarily due to a lack of formal training. The session significantly improved participants' confidence in PE, but this did not translate into short-term practice change.
The Feminization of the Canadian Pharmacy Workforce: A Gender Analysis of Graduates from a Canadian School of Pharmacy
Authors: Young Stephanie , LeMessurier Jennifer , Mathews Maria
Published: July 2012

Background:

There is limited information available regarding the impact of the feminization of the pharmacy workforce in Canada.

Methods:

Using data from a cross-sectional mailed survey, we examined gender differences among 289 pharmacists who graduated between 1990 and 2007 from pharmacy school in Newfoundland and Labrador.

Results:

Of the 114 male and 175 female respondents, a larger proportion of females than males graduated after 2000 (21.1% vs 13.3%), worked part-time (8.6% vs 1.8%), were staff pharmacists (66.3% vs 47.4%), earned $70,000 or less per year (28.0% vs 17.7%) and rated opportunities for job advancement as not important in choosing their current job (22.5% vs 12.3%). Female pharmacists also worked fewer hours than their male counterparts (mean 37.6 vs 41.3 hours). These differences were more pronounced among older female pharmacists (graduated in the 1990s).

Conclusion:

Gender and age should be considered when predicting an effective supply of pharmacists to meet current and future workforce demands. Can Pharm J 2012;145:186–190.e2.
Seismic Analysis for the Suspended Converter Valve Tower of the UHV
Authors: Sun Q.G. , Wu X.F. , Di J.J. , Zhou Y.C.
Published: July 2012

Based on the ANSYS software, a finite element model of a single converter valve tower of the UHV (Ultra High Volt) is built, the structure dynamic characteristics of the converter valve tower is analyzed by the modal analysis method, the earthquake response of the converter valve tower is calculated by the response spectrum analysis method. The prestress effect and the large deformation effect are taken into account in the calculation process, and the seismic responses under some complex loads which combine the earthquake loads and the gravity load are calculated. The results show that lots of natural frequencies of the converter valve tower, which is designed as a flexible structure, very low. The fundamental vibration modes are pendulum sways in X- and Y-direction. The displacements of the horizontal sway response of the converter valve tower are larger than other direction displacements. This conclusion must be considered in the reasonable arrangement design of the valve hall.
The Study of TiCN Coating Based on Vacuum Arc Ion Plating and its Performance
Authors: Zou Li Jing
Published: July 2012

This article provides an overview of the basic properties of the TiCN hard film, preparation methods, influencing factors, and application development trend. Magnetron sputter ion plating, radiofrequency sputtering method and multi-arc ion plating three coating preparation techniques are introduced. In this paper, with the coating by multi-arc ion plating method as the study object, an overview of the impact of C and N flow to its structure, as well as temperature, coating thickness, the pulse bias, the arc current to its performance is provided. Compared to other hard coatings, the improvement in its performance is showed and the future direction of technology development of TiCN is briefly discussed.
Au Plating Failure Prevention on the Electronic Industry
Authors: Liu Xiao Gang , Liu Ping , Gu Xiao Long , Zhao Xin Bing
Published: July 2012

Au plating was widely used to the function of soldering, contact/connection, and decoration, rendered by the extremely good solderability, customer favorite noblest appearance, excellent corrosion resistance, high electrical conductivity, etc. while Au plating thickness and quality are critical to influence the function performance and reliability after service in field. In this paper, soft gold, hard gold and selective gold plating processes were introduced in different application aspects. Some typical failure analysis cases related to Au plating such as passives tombstone, contact philosophy and mercury attack were exemplified to make clear the correct application and proper Au thickness requirement. The prevention solutions were also recommended.
Numerical Simulation Research on the Hydrodynamic Forces Acting on a Tanker in Oblique Motion
Authors: Zhan Cheng Sheng
Published: July 2012

It is easy to generate the separation of the flow in the stern when the ship is in oblique motion, and the flow around the hull is complex. In this article, the viscous flow around a tank in oblique motion is simulated using viscous method, and the maneuvering hydrodynamic forces are calculated and compared with experimental results. It is shown that the present method of the numerical simulation is feasible.
Determination of the Critical Plane under the Multiaxial Complex Loading
Authors: Wang Lei , Sui Tian Zhong , Ma Yu , Sun Yan
Published: July 2012

Engineering components and structures in service are generally subjected to the multiaxial complex loads. The approach of critical plane has been widely accepted by most researchers as the best method in the multiaxial fatigue research field. It can be used well in the constant multiaxial fatigue loads, but not in the complex loads. Basis on analyzing characteristics of shear strain on material planes, the concept of weight-averaged maximum shear strain plane is proposed. A procedure is presented to determine the critical plane under multiaxial random loading. The angle values of the planes that experience peak values of maximum shear strains are averaged by employing the weight function, which is assumed to take into account the main factors of influencing the fatigue behavior, e.g. fatigue damage. The proposed algorithm is applied to the multiaxial in- and out-of-phase experiments to assess the correlation between the weight-averaged maximum shear strain direction and the position of the experimental fatigue crack initiation plane.
The Effect of Annealing Temperature on the Band Gap of ZnO Nano Materials
Authors: Kasim Muhd Firdaus , Roshidah Rusdi , Kamil Suraya Ahmad , Kamarulzaman Norlida
Published: July 2012

Zinc oxide nanostructures were prepared by sol-gel method without using any chelating agents. The structural and optical properties of the nanostructures were studied. The precursors were annealed at 400 °C and 800 °C for 24 hours and characterized using X-Ray diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM). The band gap energies were analyzed by using a UV-Vis spectrophotometer. Based on the XRD results, all materials were single phase with the hexagonal structure without any impurities presents. Based on the FESEM results, it was found that the morphology for the materials annealed at 400 °C has nanorod shape while for the materials annealed at 800 °C, they have spherical shape. It was found that the band gap energies of the ZnO nanomaterials were dependent on the morphology of the nanostructures.
Influence of Carbon Additives on Cathode Materials, LiCoO2 and LiMn2O4
Authors: Kamarulzaman Norlida , Elong Kelimah , Roshidah Rusdi , Chayed Nor Fadilah , Badar Nurhanna , Zainudin Lili Widarti
Published: July 2012

Carbon additives are very important components of cathodes in Li-ion batteries. This is because carbon is an electronic conductor whereas cathode materials are ionic conductors. Without the presence of carbon, the electrons will not be able to flow and there will be space charge built-up in the materials. Carbon therefore facilitates the conductivity of charged species in the cathode materials and help to disperse the negative charge accumulation which may otherwise impede Li-ion diffusion within the cathodes. In this work, two types of carbon, namely, activated carbon (micron sized) and Denka Black (nano sized) were used in conjunction with the cathode materials LiCoO2and LiMn2O4. The amounts of cathode materials were kept constant while the amounts of carbon additives were varied. Galvanostatic charge-discharge was done over a voltage range of 4.2 V to 3.2 V. Results showed that Denka Black gives improved performance for both cathode material. This is believed to be due to the effect of nano sized particles of Denka Black.
The Coupling Network Ｍodeling of Forest Landscape Plaques Based on Patch Edge Effects
Authors: Yuan Xiao Hong , Li Ji Ping , Li Jian Jun , Zhang Ping Fang
Published: July 2012

Defined the parameters of forest landscape according to the characteristic of forest landscape pattern combined with complex networks theory. By using landscape blocks as nodes, the affect between plaques as lines, a coupling network modeling of forest landscape plaques is established. Taking the west Tongting Lake in Hunan province as the study area, divided the landscape pattern into 13 types, established a plaques coupling network by using the patch edge effects between two different type of blocks as power of lines. It shows that the degree of node, the indexes of landscape classification has positive relationship with the power of node, the degree of node has positive relationship with the importance of node, the area of landscape has complicated competition with the landscape fragmentation when contributes to the concentration degree.
Research and Design of Campus Network Unified Identity Authentication System Based on Kerberos
Authors: Wang Zhen Zhong , Wang Yao
Published: July 2012

In view of the actual application of the status quo of the current digital campus universities, a unified campus authentication systems and solutions for the overall framework was proposed based on the introduction of Kerberos technology and LDAP protocol, in order to improve the utilization and security of campus resources.
Application and Challenge of Cloud Computing in Army Informationization Network
Authors: Zhao Shi Yi , Yang Hui Jun , Yin Kai
Published: July 2012

This article analyzes the "cloud computing" concept and characteristics, and the application of "cloud computing" in the army informatization network from the five areas, introduces several challenges brought about by cloud computing.
The Wireless Network Positioning Strategies Basing on Mobile Terminal
Authors: Xu Lei , Zhang Yu Feng , Guo Jian , Gao Lian
Published: July 2012

With the continuous development of terminal technologies, the use of mobile terminals is becoming more and more diverse. Many value-added services brought by such applications gradually become to be the firm's new profit opportunity. The location itself has great value; with the display of electronic map or with the support of geographic information database, a variety of information can be shown, tracked and handled. Such location-based services (LBS) is widely used in the field of public wireless data, and mobile location services is recognized as the most attractive wireless data value-added business in 3G network. This paper discusses three positioning standards of the 3GPP first; and then combined with the existing GSM/GPRS cellular radio communication network, it mainly gives specific positioning implementation strategies of single base station in the TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system.
A Security Model for Multi-Agent Based on DFL
Authors: Liu Dong Xiao
Published: July 2012

Both research and application development in the area of multi-agent currently undertakes rapid expansion but only if adequate security can be provided. Without a correct security mechanism, multi-agent system suffers from fundamental insecurities. By considering both the historical contribution of computer security and the needs of agent-based systems, we present requirements for multi-agent systems security which emphasize the identification and evolution of agents. Existing security models are evaluated against these requirements and generally found wanting. On the other hand, the state of agents have dynamic attribute and that its environment has fuzzy attribute. So, we introduced Dynamic Fuzzy Logic (DFL[14]) to describe agent and the changing of its state. Artificial Immune System (AIS) is a novel evolutionary paradigm inspired by the biological aspects of the immune system. There are widely agreed in characteristics of agents and AIS, such as dynamic, self-study, self-adaptability, self-organization, etc. So it is a natural thing that AI theory is introduced into multi-agent. In this paper, we present the multi-agent immune secure model based on DFL , then a application example is given to simulate the process of the model.
Research on Machine Translation System of Semantic Network Partition
Authors: Su Hui Ming
Published: July 2012

This paper reports a new architecture of intelligent question answering system based on the analysis of answering systems’ advantages and disadvantages. According to the design of ARIANE system, it develops the machine translation system for problem extraction. In the machine translation system design, analysis, and intelligent syntax has been difficult to solve. For the syntax analysis and word construction problems in intelligent segmentation, this paper adopts semantic network partition to solve it, It is partition in some level of association, can batter handle the issue to focus in semantic network partition. In this way, the user issues after word from the words library screening, a list of a series of related issues in descending order by degree of difficulty and returned to the user. Experimental analysis proves the usability of the improved algorithm.
Design of 3D Real-Time Visualization Simulation System Based on STK
Authors: Liu De Sheng , Guo Jing , Xiong Wei
Published: July 2012

Visualization simulation can reflect the dynamic characters of object studied lively. Satellite Tool Kit (STK), developed by Analytical Graphics Inc., is a software used for 3D simulation and analysis. It has the characteristics of powerful model library, 3D effects and sound and rapid development. This paper discusses the application mode of STK/Connect, and proposes a method that a third-part program controls the STK scenario through STK/Connect to build a 3D visualization simulation system. A case is given to prove the feasibility of the solution.
A Parallel Scheduling Algorithm of Multi-Core Processor Based on Task Clustering and Duplication
Authors: Ma Xiao Hui
Published: July 2012

This thesis presents a parallel scheduling algorithm of multi-core processor based on task clustering and duplication. This algorithm, using the strategy of task clustering, gives priority to the operation of thread nodes of the same process on the same processor and effectively reduces time complexity of task scheduling. In order to avoid the unbalanced task load on the processors, it will employ their ultimate values to control the load. Finally, for achieving the optimal time of task operations, this algorithm, with the adoption of task duplication strategy, looks for the key tasks and duplicates them so as to fully utilize the resources of each core on the processor and improve the efficiency of task scheduling. The analysis of the experiment shows that, with the increasing number of task scheduling, the time of task operation of this algorithm is always the least.
The Design of the Marine Temperature Sensor Verifier Based on Single-Chip Microcomputer
Authors: Sun Yan Qiu
Published: July 2012

Using conventional passive resistance box to verify Pt100 platinum thermal resistance, Listing Temperature and Pt100 platinum resistance must be remember by users. It is difficult to manipulate. Temperature verifier based on single-chip microcomputer is small, high accuracy, multi-output, temperature and resistance comparison, which can improve production efficiency considerably.
Autonomous Land Vehicle Localization Based on Video Compass
Authors: Nie Yi Ming , Wu Tao , Li Chuan Xiang , An Xiang Jing , Sun Zhen Ping , Ye Lei , Dai Bin
Published: July 2012

The autonomous land vehicle localization is crucial for navigation, local path planning and position control in urban environments. The Video Compass method is proposed for autonomous land vehicle in this paper. First, the lane marking information from monocular camera is extracted. Second, the change of vanishing point is calculated from the lane markings. Third, with the above two conditions the autonomous land vehicle absolute direction could be deduced. This is the technique of the Video Compass proposed in this paper. Finally, the localization is calculated by the Video Compass and the wheel encoder. The algorithm presented in this paper is proved to be both robust and fast by experiments.
Experiment Study on the Influence Rules of Laser Texturing Micro-Profile on the Surface of 45 Steel
Authors: Zhang Jian , Xie Xia , Ren Ying , Wen Bing Quan , Xu Ai Fen
Published: July 2012

Technology experiments of laser texturing were studied on the sample of 45 steel by the way of single factor, and the influence rules of both laser voltage and pulse duration on the geometrical dimensions after laser texturing microtopography were obtained. The microstructure and microhardness of laser texturing micro-topography were analyzed and measured, and compared with the microstructure and microhardness of matrix. The results showed that the surface microhardness of laser texturing had been increased by about 50 percent.
Electrical System of Thread Rolling Machine
Authors: Gao Wei
Published: July 2012

The thesis designs a new kind of electrical system of thread rolling machine. The design bases on the grating, microchip and has quick response, which overcomes the drawback of the electrical system basing on PLC.
Design of Situation Assessment System Based on Knowledge Base
Authors: Du Fei Fei , Huang Qi Zhi , Wang Lei , Su Xi
Published: July 2012

Situation assessment (SA) is essentially a reasoning process based on knowledge, thus knowledge base is one of the most important components of SA system. According to the analysis of situation shaping process, this paper defines the needs of battlefield decision-making on SA system, designs a primary structure of SA system based on knowledge base and expatiates its operation.
Texture Segmentation of Natural Images Based on Active Contour Model
Authors: Wang Zhan , Yan Yun Hui , Dong De Wei , Song Ke Chen
Published: July 2012

To segment complex texture natural environment images; the first, the texture features of natural images should be analysed and the texture features should be extracted; The second, texture images segmengtation can be achieved by using Mumford-Shah active contour model, this segmentation model can better process fuzzy, default boundary, and this model can be solved by level set method. This method can express well complex texture signal features of natural images. Through making texture segmentation experiment for standard texture synthesis image and natural environmental image, its results show that the texture segmentation based on Mumford-Shah active contour model can segment natural images.
A New Approach to Trivariate Blending Rational Interpolation
Authors: Zou Le , Xie Jin , Li Chang Wen
Published: July 2012

The advantages of barycentric interpolation formulations in computation are small number of floating points operations and good numerical stability. Adding a new data pair, the barycentric interpolation formula don’t require to renew computation of all basis functions. Thiele-type continued fractions interpolation and Newton interpolation may be the favoured nonlinear and linear interpolation. A new kind of trivariate blending rational interpolants were constructed by combining barycentric interpolation, Thiele continued fractions and Newton interpolation. We discussed the interpolation theorem, dual interpolation, no poles of the property and error estimation.
The Flocculation and Stability of TiO2 Nanoparticles
Authors: Liu Xiao Ying , Hao Xiao Dong , Gu Chun Xiang , Zhang Yu Xin , Li Xin Lu , Huang Jia Mu
Published: July 2012

In this work, TiO2nanoparticles (NPs) were prepared through a well-developed hydrothermal method. The dry products were characterized by digital camera, transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermogravimetric method (TGA). These results suggested that TiO2NPs were well-crystallized and oleic acid-capped (OA-capped; 33.42 wt.%). In order to investigate the flocculation and stability of TiO2NPs colloids, redispersed experiments were carried out by altering the preparative parameters (e.g., redispersion solvent, washing times). In addition, the compounding stability of TiO2NPs colloids with AuNPs colloids and MnO4-solution under processing conditions (e.g., aging with stirring and under UV irradiation) were also studied. In principle, systematic investigations of flocculation and stability of TiO2NPs will be useful for their potential applications including novel photocatalysts and biosensors.
Thiosulfate Leaching of Middle-Refractory Gold Ore with Ferricyanide as Oxidant
Authors: Zi Fu Ting , Hu Xian Zhi , Zhang Wen Bin , He Su Qiong
Published: July 2012

In order to decrease the consumption of lixiviant, study on dissolution of pure gold and middle-refractory gold ore using a novel thiosulfate leaching system with ferricyanide as oxidant was carried out. The results showed that the advantage of the novel system is that the thiosulfate consumption is negligible though the potential of ferricyanide is much higher than that of traditional cupric ammine complex. And compared to the ferric oxalate system, novel system could be used at relatively high pH condition which benefit to the stability of thiosulfate because ferricyanide can’t transfer to iron hydroxide in base solution. It is unlikely that very high dissolution rate of gold can be obtained using an air saturated thiosulfate- ferricyanide system without thiourea catalyst. However gold dissolution rate was increased with the increasing of concentration of ferricyanid in 5 mmol/L to 30mmol/L. When 0.1mmol/L thiourea was presented, the dissolution of gold approximately 1.5 times faster than that of in the absence of thiourea. Leaching of middle-refractory gold ore show that both of the consumption of thiosulfate and leaching rate was decreased compare to the traditional copper–ammonia thiosulfate system. Thiourea is not stable in base solution, but it was found that gold dissolution rates can be increased with a little thiourea ,the mechanism is still unclear.
Finite Difference Analysis of Roadway Support
Authors: Zhang Yu , Kong Xiang Yi
Published: July 2012

Hunchun Mining Co., Ltd. for a 11910 face return air drift mine for the study of the background, using the finite difference software (FLAC) simulated roadway excavation and shoring, anchors through simulation analysis supporting roadway network cable and rock deformation stress distribution, simulation results show that the design of the anchor mesh-supporting design a good change of rock mechanical properties, enhanced adhesion of rock, effectively inhibited the expansion phenomenon, so that the stress distribution roadway more reasonable engineering practice shows that after verification and simulation to determine the support scheme is feasible.
A Fuzzy Set AHP-Based Design for Manufacture Method
Authors: Liu Hong Jun , Tong Xiao Yan , Lv Sheng Li
Published: July 2012

In the light of growing global competition, organizations around the world today are constantly under pressure to produce high-quality products at an economical price. The integration of design and manufacturing activities into one common engineering effort has been recognized as a key strategy for survival and growth. Design for manufacturability (DFM) requires product designers to simultaneously consider the manufacturing issues of a product along with the geometrical and design aspects. In this paper, part manufacturability was analyzed in detail. An evaluation system of DFM was proposed. Product design can be guided according to feedback information by evaluating the part manufacturability.
The Selection of the Optimal Solution for SHEPWM under the Influence of IGBT's Manufacturing Technology and Power Losses
Authors: Zhang Yu Han , Lang An Dong
Published: July 2012

The paper proposes a method for the selection of the optimal solution among different feasible solutions of the SHEPWM nonlinear model. The method regards the power losses of the switching devices as a criterion for evaluating the possible groups of solutions. The overall power losses are calculated under each combination of the switching angles at first. The variation track of the power losses that could determine the optimal solution under the specific value of m is presented later. The simulation results contrast the new method with the traditional THD method. A comprehensive evaluation considering both methods was concluded at last.
Automatic Calibrate Map System of Logging Curves Based on C/S
Authors: Wang Hui , Li Guo Jia , Dong Gui Ling , Pan Jun Hui , Gao Xing
Published: July 2012

The calibration of the depth of well logging curves peak is an important process of perforation, the rational selection and depth identification accuracy of the peak is the key of calibrated map. A method of automatic calibrated map of logging curves based on C/S is put forward in this paper. In this method, the logging curve data is loaded and saved through the analysis of data, and the position of the peak is judged on the method of relative value, then, the precise peak depth value is calculated. The experimental results demonstrate that the method of automatic calibrated map has better speed and high accuracy, and it provides reliable and accurate data for petroleum reservoir development.
Application of Low-Position Vacuum Deaerator in Steam Injection Boiler Supply Water Deaeration in Oil Fields
Authors: Wen Feng Yu , Wang Qiang , Dong Xian Bin , Ma Hong Liang , Tian Gang
Published: July 2012

A high level of oxygen in boiler supply water would lead to oxidation corrosion of the boiler tubes. Reduction of the boiler tube thickness will affect its service life even result in such serious accidents as tube explosion. In S oil-field, a combining measure of physical and chemical methods were adopted to improve deaerator technology. A relatively complete ground deaeration process is formed. The deaeration system consists of water ring vaccum pump, deaeration tank, booster pump, circulating tank, etc. First softened water processed by softener would flow through 80 mesh stainless steel screen filter. Then in high vacuum deaeration tank, the water will be ejected in a spray due to the eddying flow of the nozzles and size of the droplet can reach 30 micrometer. Oxygen partial pressure in the tank is in a minimal level so that dissolved oxygen in the water-drops can be released. The steam and released oxygen will be sent to circulating tank for recycling. Deoxidation rate of the process can be above 95% and residual dissolved oxygen can be removed by chemicals. So the boiler supply water can meet technical requirements. The deaeration system has a good application in boiler supply water deaeration in S oil-field. Practical application shows the deaeration system has characteristics of stable performance, mainly maintenance-free, and good adaptability to some poor-quality water. So the deaeration system has a good promotion value.
Development of Standard Part Library Based on SolidWorks
Authors: Fang Zhou , Zhang Li Na
Published: July 2012

Mechanical Design Handbook oriented standard part library system of jaw clutches is developed based on SolidWorks. The system consists of three elements, namely a dimension parameter database, a user interface, and a modeling function module. The jaw clutch dimension parameter database is designed based on national standards. According to designers’ thinking habit, a visual user interface is customized to make easy use of the dimension parameter database. The data relationship between the modeling function module and dimension parameter database is established by using parametric program driven method. The jaw clutch standard part library with characteristics of friendly user interface and expansible database is easy to use. The approach adopted in the paper can be used to develop other general 3D standard part library on SolidWorks.