bluuebunny/crossref_metadata_2025 huggingface dataset:
Acetaminophen Toxicity and 5-Oxoproline (Pyroglutamic Acid)
Authors: Emmett Michael
Published: November 2013

The acquired form of 5-oxoproline (pyroglutamic acid) metabolic acidosis was first described in 1989 and its relationship to chronic acetaminophen ingestion was proposed the next year. Since then, this cause of chronic anion gap metabolic acidosis has been increasingly recognized. Many cases go unrecognized because an assay for 5-oxoproline is not widely available. Most cases occur in malnourished, chronically ill women with a history of chronic acetaminophen ingestion. Acetaminophen levels are very rarely in the toxic range; rather, they are usually therapeutic or low. The disorder generally resolves with cessation of acetaminophen and administration of intravenous fluids. Methionine orN-acetyl cysteine may accelerate resolution and methionine is protective in a rodent model. The disorder has been attributed to glutathione depletion and activation of a key enzyme in theγ-glutamyl cycle. However, the specific metabolic derangements that cause the 5-oxoproline accumulation remain unclear. An ATP-depleting futile 5-oxoproline cycle can explain the accumulation of 5-oxoproline after chronic acetaminophen ingestion. This cycle is activated by the depletion of both glutathione and cysteine. This explanation contributes to our understanding of acetaminophen-induced 5-oxoproline metabolic acidosis and the beneficial role ofN-acetyl cysteine therapy. The ATP-depleting futile 5-oxoproline cycle may also play a role in the energy depletions that occur in other acetaminophen-related toxic syndromes.
Diabetes Clinic at a Distance: Telemedicine Bridges the Gap
Authors: Malasanos Toree , Ramnitz Mary Scott
Published: November 2013

In Brief

Clinic-to-clinic telemedicine has been shown to be an efficient and effective means of providing diabetes care to remote, underserved regions. Improved access to care has the potential to improve the health of and reduce health care costs for individuals in underserved regions. This article reviews the evidence related to, benefits of, and barriers to this mode of care.
Improvement of Manufacturing Process Quality According to Final Inspection Results
Authors: Andrássyová Zuzana , Hrubec Jozef , Del Carmen Bas Cerdá Maria
Published: November 2013

Final inspection represents the last inspection operation of production line before the product reaches a customer. If nonconformities are not detected within the production process, final inspection has to ensure their detection. This contribution focuses on the final inspection results of the manufacturing process of automobile’s front seats. The outputs of final inspection are prepared by means of quality management tools (Pareto analysis). Inspection items, their changes, remedies and precautions leading to seat quality improvement are defined. The evaluation of final inspection for the following period confirms the improvement of the manufacturing process or control quality for selected inspection items.
Design and Verification of Tractor Wheels Equipped with Automatically Extensible Blades
Authors: Abrahám Rudolf , Majdan Radoslav , Mojžiš Miroslav
Published: November 2013

This paper focuses on the possibility of increasing the drawbar pull of an agricultural tractor on the soil and grass-covered surface. We have compared the tractor tyre traction properties with a newly developed system of automatically extensible blades next to the tractor drive wheel tyres. The tractor with wheels equipped with auto-extensible blades reached a higher drawbar pull at an average of 70 % on the soil and 80 % on grass compared to tyres.
Patient Global Ratings of Change Did Not Adequately Reflect Change Over Time: A Clinical Cohort Study
Authors: Schmitt John S. , Abbott J. Haxby
Published: November 2013

Background

Global ratings of change (GROCs) are commonly used in research and clinical practice to determine which patients respond to therapy, but their validity as a criterion for change has not been firmly established. One factor related to their validity is the length of the recall period.

Objective

The study objective was to examine the influence of the length of the recall period on the validity of a GROC for determining true change over time in the clinical setting.

Design

This was a longitudinal, single-cohort observational study.

Methods

Data from the Focus on Therapeutic Outcomes clinical database were collected for 8,955 patients reporting for physical therapy treatment of a knee disorder. Computerized adaptive testing was used to assess knee functional status (FS) at the initial and final (discharge) physical therapy visits. Each patient's GROC was obtained at discharge. Correlation and linear regression analyses of knee FS and GROC, stratified by length of time between intake and discharge, were conducted.

Results

Correlations of GROC with knee FS change scores were modest even for the shortest period of recall (0–30 days) and were slightly lower for longer recall periods. Regression analyses using knee FS to predict GROC scores revealed similar findings. Correlations of GROC with intake and discharge scores indicated a strong bias toward discharge status, with little or no influence of baseline status. Standardized regression coefficients fitted the pattern expected for a valid measure of change but confirmed the strong bias toward discharge status.

Limitations

One version of the GROC administered serially in a cohort of patients seen in clinical practice was examined.

Conclusions

These results call into question the validity of GROCs for measuring change over time in routine clinical practice.
Self-reported Causes of Weight Gain: Among Prebariatric Surgery Patients
Authors: Ferguson Sarah , Al-Rehany Layla , Tang Cathy , Gougeon Lorraine , Warwick Katie , Madill Janet
Published: November 2013

Purpose: Bariatric surgery is accepted by the medical community as the most effective treatment for obesity; however, weight regain after surgery remains common. Long-term weight loss and weight maintenance may be aided when dietitians who provide perioperative care understand the causes of weight gain leading to bariatric surgery. In this study, the most common causes for weight gain were examined among prebariatric surgery patients.

Methods: A retrospective chart review was conducted for 160 patients enrolled in a bariatric surgery program. Data were collected for 20 variables : puberty, pregnancy, menopause, change in living environment, change in job/career, financial problems, quitting smoking, drug or alcohol use, medical condition, surgery, injury affecting mobility, chronic pain, dieting, others’ influence over diet, abuse, mental health condition, stress, death of a loved one, divorce/end of a relationship, and other causes. Frequency distribution and chi-square tests were performed using SPSS.

Results: Sixty-three percent of participants selected stress as a cause of weight gain, while 56% selected dieting. Significant differences existed between women and men in the selection of dieting and change in living environment.

Conclusions: This information may allow dietitians to better identify causes for weight gain leading to bariatric surgery, and to address these causes appropriately before and after surgery.
Cerebral vascular malformations in hereditary hemorrhagic telangiectasia
Authors: Woodall M. Neil , McGettigan Melissa , Figueroa Ramon , Gossage James R. , Alleyne Cargill H.
Published: November 2013

Object

Hereditary hemorrhagic telangiectasia (HHT) is a hereditary disorder characterized by mucocutaneous telangiectasias, frequent nosebleeds, and visceral arteriovenous malformations (AVMs). Few reports have outlined the prevalence of the various cerebral vascular malformations found in patients with HHT. The authors set out to define the prevalence of cerebral vascular malformations in a population of HHT patients who underwent imaging with 3-T imaging (MRI/MR angiography [MRA]) of the brain.

Methods

A retrospective review of prospectively collected data was carried out using a database of 372 HHT patients who were seen and examined at the Georgia Regents University HHT Center and screened with 3-T MRI/MRA. Data were tabulated for numbers and types of vascular malformations in this population.

Results

Arteriovenous malformations were identified in 7.7%, developmental venous anomalies in 4.3%, and cerebral aneurysms in 2.4% of HHT patients. The HHT AVMs tended to be supratentorial, small, and cortical in this series, findings consistent with other recent studies in the literature. An arteriovenous fistula, cavernous malformation, and capillary telangiectasia were identified in 0.5%, 1%, and 1.9% of HHT patients, respectively.

Conclusions

Few studies have investigated the prevalence of the various vascular malformations found in HHT patients screened with 3-T MRI/MRA of the brain. Hereditary hemorrhagic telangiectasia AVMs are more likely to be multiple and have a tendency toward small size and cortical location. As such, they are often treated using a single-modality therapy.
Optimal Entropy-Based Cooperative Spectrum Sensing for Maritime Cognitive Radio Networks
Authors: Ejaz Waleed , Shah Ghalib , Hasan Najam , Kim Hyung
Published: November 2013

Maritime cognitive radio networks (MCRNs) have recently been proposed for opportunistic utilization of the licensed band. Spectrum sensing is one of the key issues for the successful deployment of the MCRNs. The maritime environment is unique in terms of radio wave propagation over water, surface reflection and wave occlusions. In order to deal with the challenging maritime environment, we proposed an optimal entropy-based cooperative spectrum sensing. As the results of spectrum sensing are sensitive to the number of samples in an entropy-based local detection scheme, we first calculated the optimal number of samples. Next, a cooperative spectrum sensing scheme considering the conditions of the sea environment is proposed. Finally, the throughput optimization of the m-out-of-n rule is considered. Results revealed that although the existing schemes work well for the lower sea states, they fail to perform at higher sea states. Moreover, simulation results also indicated the robustness of the entropy-based scheme and the proposed cooperative spectrum sensing scheme at higher sea states in comparison with the traditional energy detector.
What about Global History? Dilemmas in the Selection of Content in the School Subject History
Authors: Poulsen Jens
Published: November 2013

It is a cliché, but also a fundamental fact that we live in a world where globalization and international challenges, opportunities and relationships play an increasing role. However, how have these changing conditions affected the content of school history? To what degree have curricula and textbooks addressed these challenges? Is the main focus in school history still on the history of the nation state, or has it successfully integrated topics and themes from world history? These are questions I discuss in this paper. In the main, my starting point is the situation in Denmark, but with perspectives and comparisons from Norway, England and Germany. Among other things, I will put school history in a historical context, because the subject’s history and genesis—in my opinion—tends to maintain a traditional content and form of organization, thereby reducing the subject’s usefulness. At the end of the paper, I outline and discuss a few alternative options for selecting and organizing the content with the aim of being more inclusive with regard to global and international aspects. The paper must be understood as a step towards the clarification of a development project that aims to propose and experiment with practices for the selection and organization of the content of the history curriculum, with the aim of increasing the international and global dimensions in history teaching.
Onjisaponin B Derived from Radix Polygalae Enhances Autophagy and Accelerates the Degradation of Mutant α-Synuclein and Huntingtin in PC-12 Cells
Authors: Wu An-Guo , Wong Vincent , Xu Su-Wei , Chan Wai-Kit , Ng Choi-In , Liu Liang , Law Betty
Published: November 2013

Emerging evidence indicates important protective roles being played by autophagy in neurodegenerative disorders through clearance of aggregate-prone or mutant proteins. In the current study, we aimed to identify autophagy inducers from Chinese medicinal herbs as a potential neuroprotective agent that enhances the clearance of mutant huntingtin and α-synuclein in PC-12 cells. Through intensive screening using the green fluorescent protein-light chain 3 (GFP-LC3) autophagy detection platform, we found that the ethanol extracts of Radix Polygalae (Yuan Zhi) were capable of inducing autophagy. Further investigation showed that among three single components derived from Radix Polygalae—i.e., polygalacic acid, senegenin and onjisaponin B—onjisaponin B was able to induce autophagy and accelerate both the removal of mutant huntingtin and A53T α-synuclein, which are highly associated with Huntington disease and Parkinson disease, respectively. Our study further demonstrated that onjisaponin B induces autophagy via the AMPK-mTOR signaling pathway. Therefore, findings in the current study provide detailed insights into the protective mechanism of a novel autophagy inducer, which is valuable for further investigation as a new candidate agent for modulating neurodegenerative disorders through the reduction of toxicity and clearance of mutant proteins in the cellular level.
Cellular Immunotherapy: Using Alloreactivity to Induce Anti-Leukemic Responses without Prolonged Persistence of Donor Cells
Authors: Fast Loren , Reagan John , Quesenberry Peter
Published: November 2013

A goal of cancer immunologists is to harness cellular immune responses to achieve anti-cancer responses. One of the strongest activating stimuli for the immune system is the encounter with cells expressing allogeneic HLA molecules. While alloreactive responses can negatively impact of the outcome of hematopoietic stem cell transplant because of graft-versus-host disease (GVHD), these same responses can have anti-leukemic effects. Donor lymphocyte infusions have been used in an attempt to harness alloreactive responses to achieve anti-leukemic responses. Because this protocol is usually carried out in the absence of recipient anti-donor responses, this protocol often induces GVHD as well as anti-leukemic responses. A recent study indicated the infusion of large number of haploidentical donor cells (1–2 × 108 CD3+ cells/kg) into patients with refractory hematological malignancies (100 cGy total body irradiation) resulted in 14 (7 major) responses/26 patients. A rapidly developing cytokine storm was observed, while no persisting donor cells could be detected at two weeks after infusion eliminating the possibility of GVHD. Characterization of the effector mechanisms responsible for the anti-leukemic responses in this protocol, should guide new approaches for achieving enhanced anti-leukemic responses using this protocol.
Fabrication and Characterization of SnO2/Graphene Composites as High Capacity Anodes for Li-Ion Batteries
Authors: Dhanabalan Abirami , Li Xifei , Agrawal Richa , Chen Chunhui , Wang Chunlei
Published: November 2013

Tin-oxide and graphene (TG) composites were fabricated using the Electrostatic Spray Deposition (ESD) technique, and tested as anode materials for Li-ion batteries. The electrochemical performance of the as-deposited TG composites were compared to heat-treated TG composites along with pure tin-oxide films. The heat-treated composites exhibited superior specific capacity and energy density than both the as-deposited TG composites and tin oxide samples. At the 70th cycle, the specific capacities of the as-deposited and post heat-treated samples were 534 and 737 mA·h/g, respectively, and the corresponding energy densities of the as-deposited and heat-treated composites were 1240 and 1760 W·h/kg, respectively. This improvement in the electrochemical performance of the TG composite anodes as compared to the pure tin oxide samples is attributed to the synergy between tin oxide and graphene, which increases the electrical conductivity of tin oxide and helps alleviate volumetric changes in tin-oxide during cycling.
Quelques éléments de réflexion sur les bonifications de pension pour enfants
Authors: Paris Hélène
Published: November 2013

FRE: Retraite, Pensions de retraite, Droit de la famille
The Mediating Role of Sensation Seeking on the Relationship Between Risk Perceptions and Travel Behavior
Authors: Sharifpour Mona , Walters Gabrielle , Ritchie Brent W.
Published: November 2013

Previous tourism research recognizes the positive role that risk may play in arousing individuals' interests to engage in certain activities or to visit destinations assumed to be risky. However, limited research has been devoted to expand our understanding of the nature of the relationship
between sensation seeking and tourist risk perceptions. This research aimed to investigate the mediating role of sensation seeking that indirectly influences the relationships between individuals' risk perception and their decision behavior. The results suggest that individuals' sensation-seeking
propensity may play a significant role in tolerating some risk types, particularly those associated with physical harm, and accordingly it can increase their willingness to travel to regions perceived to be risky. This research makes an original contribution to the field through the application
of an empirical confirmatory approach while suggesting implications for practitioners.
Predictive Validity of Sustas
Authors: Sirakaya-Turk Ercan , Gursoy Dogan
Published: November 2013

The goal of this research note is to establish further support for a more rigorous form of validity of the SUSTAS scale by predicting behavioral intentions of residents toward pro-sustainable behavior using structural equation modeling (SEM). The data were collected from a stratified
random sample of 2,000 households in Charleston County, South Carolina, USA. SUSTAS has reasonable predictive validity when behavioral intentions are measured by the two pro-sustainability factors.
Recent advances in transition metal-catalyzed Csp2-monofluoro-, difluoro-, perfluoromethylation and trifluoromethylthiolation
Authors: Landelle Grégory , Panossian Armen , Pazenok Sergiy , Vors Jean-Pierre , Leroux Frédéric R
Published: November 2013

In the last few years, transition metal-mediated reactions have joined the toolbox of chemists working in the field of fluorination for Life-Science oriented research. The successful execution of transition metal-catalyzed carbon–fluorine bond formation has become a landmark achievement in fluorine chemistry. This rapidly growing research field has been the subject of some excellent reviews. Our approach focuses exclusively on transition metal-catalyzed reactions that allow the introduction of –CFH2, –CF2H, –CnF2n+1 and –SCF3 groups onto sp² carbon atoms. Transformations are discussed according to the reaction-type and the metal employed. The review will not extend to conventional non-transition metal methods to these fluorinated groups.
Text-to-Speech Software as Assistive and Mainstream Technology
Authors: Baker Fiona S.
Published: November 2013

This chapter presents the case for mainstreaming text-to-speech software for students with reading difficulties in the educational environment through a socio-constructivist approach. Socio-constructivism guides this chapter and communicates its purpose. The argument presented is that a purely functional approach that serves only students with reading disabilities such as dyslexia, confines the delivery of text-to-speech software to a select population, which results in limited outreach and use. Further, despite increased consumer involvement in assistive technology delivery with its potential to increase student participation, the target population is defined by professionals and based on human function rather than determined by a self-assessment of individual need, and may be further negatively impacted by human, contextual, and technological factors. By transitioning to a socio-constructivist approach, there is greater potential to assist a larger number of students who may otherwise not have the opportunity to explore text-to-speech software’s potential and throughout their educational career may continue to experience difficulties in reading.
A Phatic Approach to Assistive and Augmentative Communications Vocabularies
Authors: Slotznick Benjamin
Published: November 2013

Users of Assistive and Augmentative Communications (AAC) systems sometimes have difficulty: (a) participating in conversation outside of a script they already know, (b) repairing a derailed conversation, or (c) engaging in the quick and varied banter demanded of many social situations. This chapter presents tools being developed to remedy these challenges, and the “phatic” approach on which they are based. In contrast to most AAC vocabularies, phatic vocabularies are characterized by providing a variety of expressions for the same meme. In addition, vocabularies developed via a phatic approach may use language to convey gesture, affirmation, or emotive support as much as or more than to convey wants, needs, or narrative. The intent of this chapter is not to argue for the replacement of standard AAC vocabularies, but instead to show how phatic vocabularies, through the use of tools, can be successfully used to enhance a user’s language development, particularly social language and social development, by creating vocabularies that encourage a user to engage in social settings.
Assistive Technology and Distance Learning
Authors: Bastedo Kathleen , Vargas Jessica
Published: November 2013

For those with disabilities, distance-learning courses can provide access to a world that was once inaccessible. Online learning becomes a possibility and for many a gateway to contributing to the world around them. However, there are many points to consider when ensuring accessibility in distance-learning courses. By exploring the current research and trends, this chapter reviews learning management systems, learner interaction styles and tools, and methods to design accessible course materials. It provides the educator with not only a working vocabulary but also with strategies and implementation methods for ensuring accessible content in online learning.
A 15 Factor and 157 Item Checklist for Assessing Website Usability and Accessibility
Authors: Kinsell Carolyn , DaCosta Boaventura
Published: November 2013

Website assessment is still a very much ill-defined practice, conducted by some and largely ignored by most. Instruments to help assess and measure the usability of websites are vital in ensuring that websites not only meet their intended purpose but are also usable and accessible. This chapter presents a checklist comprised of 15 factors and 157 items matured over years that are rooted in cognitive psychology, instructional design, computer science, but most importantly, human-computer interface study, which can be used to guide researchers and practitioners in assessing the usability and accessibility of website design.
Utilizing Cloud Computing in Developing a Mobile Location-Aware Tourist Guide System
Authors: Alshattnawi Sawsan
Published: November 2013

Cloud Computing technologies support mobile applications and overcome the low computation resources and limited data storage by providing an on-demand access with pay-as-use rule to large number of computing resources. In this paper, the author describes the architecture of an electronic tourist guide system (Trip@Cloud) as mobile cloud computing application wherein the tourists can access cloudy information in ubiquitous and pervasive manner. The information needs not to be over the user's mobile device, but it will be downloaded to user's device according to user's location and the Internet status connection. The interaction between the mobile device and the cloud is done when possible and transparently from the user. The existing architectures of partitioning the application between the device and the cloud depends deeply on the CPU workloads. The author’s application's nature is different from these applications and this represents the main contribution. The idea is to download the data to the user's device according to the current user location. Therefore the partitioning is done for the data to be sent to the mobile device. This idea is applied by developing a tourist guide application where the data to be installed is very huge and the mobile storage device is very limited.
Inventory Control and Replenishment of Multi-Product Multi-Echelon Based on Time Cost Under JMI Environment
Authors: Chen Zhi , Ren Chao , Zhang Ren-long , Shan Mi-Yuan
Published: November 2013

Joint managed inventory is an advanced supply chain inventory management tool, which will effectively tackle the complicated problem between the inventory cost of supply chain and service level. The research on inventory model and its’ control under JMI environment is a hot issue at present. In this paper, the authors deeply discuss the question of the inventory time costs about the multi-product and multi-echelon control model and its’ replenishment strategy under JMI environment. With considering the foundation of JMI and time cost, the authors propose the multi-product multi-echelon inventory cost control model under time cost. Then formulate corresponding replenishment strategy. At last, through a numerical example, the authors discover that the multi-product multi-echelon joint inventory management based on time cost can effectively reduce the total inventory costs and improve the competitiveness of the entire supply chain.
SNMP-Based RMA Analysis of Wired and Wireless Networks
Authors: Sheybani E. , Ralph L. , Javidi G. , Eslami A. , Luttamaguzi J.
Published: November 2013

This research aims at describing a method to subjectively measure specific parameters in a wired or wireless network environment using the Simple Network Management Protocols for the purpose of improving Reliability, Maintainability, and Availability of the network devices. This is of importance in cases where the network is in remote or hard to access locations such as space, defense, or polar applications. Furthermore, the results can be used for troubleshooting and/or failure prediction of the network devices. Applications of health monitoring and prediction in network environments are expanding as are the networks.
Numerical Simulation on the Blanking of Metal Tubes
Authors: Yu Yong Ping , Yang Qiu He , Hu Mei Jun
Published: November 2013

Bearing steel tube blanking has application potential in bearing ring manufacturing. However, compared with sheet blanking, tube blanking has been rarely studied yet. In order to achieve an intensive understanding of the mechanism of the tube blanking process, an numerical simulation has been carried out by using the commercial software package DEFORM, which is capable of dealing with crack initiation and propagation of material. The McClintock criterion is adopted to estimate the crack initiation and propagation during blanking. Damage value of the criterion in simulation is decided with the experiment data of tension and compression test of GCr15 bearing steel. The blanking of the tube with 42 mm in outer diameter and 3 mm in thickness was simulated and the simulation was validated with experiment.
Experimental Study on Abrasion Resistance of Grinding Rolls with Stripes Surface
Authors: Qi Ying Chun , Xu Yan Jun , Wang Qing Bo , Teng Feng Ming , Cong Qian , Jin Jing Fu
Published: November 2013

In order to study the impact on the roller abrasion resistance of the surface structure parameters such as stripes depth and number, roller abrasion model experiments were carried out with quartz sand as granular material and optimal design method was used to arrange testing program. Based on structural features of roller press, a model test bed was build and stripes roller were design and manufactured according to similar principles. Roller surface structure parameters were determined by orthogonal polynomial regression design method. By processing the test data, a regression equation was obtained with stripes depth, number and the amount of wear as parameters. The results showed that: Stripes structure grinding rollers have better abrasion resistance than the light roller; The depth and the number of stripes have a greater impact on the abrasion resistance and there was an interaction between them; In the same conditions, when the stripe depth is fixed, the wear amount increases with the number of stripes increasing; when a fixed number of stripes, the wear amount decreases with stripes depth increasing.
Structural, Magnetic and Electrical Transport Properties of Ternary Compound LaCo2Ge2
Authors: Liu Han Yuan , Fu Li , Guo Yong Quan
Published: November 2013

Ternary compound LaCo2Ge2 was synthesized and characterized by means of XRD, magnetic and electrical measurements. Rietveld structure refinements of powder XRD patterns confirm that LaCo2Ge2 compound crystallizes with a body-centered tetragonal structure of ThCr2Si2-type (space group I4/mmm) with the unit lattice parameters a=4.105(6) Å and c=10.264(7) Å. Nd, Co and Ge occupy 2a, 4d and 4e crystal positions, respectively. Magnetism measurements show that LaCo2Ge2 is nearly temperature-impendent Pauli paramagnetic down to 100 K, whereas orders diamagnetic at elevated temperatures. The (T) measurement showed that is 0.34625 and a positive temperature coefficient for LaCo2Ge2 is equal to 0.82178, indicating that LaCo2Ge2 exhibits typical semimetallic.
Forming Performance of 800MPa Grade Advanced High Strength Steels
Authors: Zhang Mei , Ning Yu Xiang , Zhang Jun , Wan Zi , Wang Tao
Published: November 2013

800MPa grade Advanced High Strength Steels (AHSS), including Complex Phase steel CP800 and Ferrite-Bainite steel FB800, were chosen to test the forming performance in different test conditions and compared with the reference traditional high strength low alloy (HSLA) steels HR700LA. Tensile test, hole expansion (HE) test, and HAT shape stamping test were taken to investigate the forming performance of the materials. Test results indicated that the studied 800MPa grade AHSS showed a better strength ductility balance compared with the reference steel. Among all the steels researched, FB800 showed the best hole expansion ratio (HER), and CP800 the worst. Springback angles of AHSS after HAT shape stamping tests were markedly smaller than those of HR700LA steels, though the springback angles of HR700LA decreased continuously with blank holding force (BHF) increasing. Steel FB800, CP800S and CP800B had much better shape stability compared with steels HR700LA. AHSS showed much smaller springback behavior under the same stamping condition, especially for steels CP800-B, FB800-2 and FB800-1. When increasing the BHF to 100KN, AHSS showed the largest springback deformation. Among the three kinds of CP800 steels researched, steel CP800-B indicated outstanding springback restrain trend in BHF further increasing attempt. So, springback behavior could be restricted obviously by using a larger BHF in AHSS CP800B forming operations.
Arc Welding Working Hours Based on MODAPTS
Authors: Ma Zi Qin , Wang Tao , Wang Dong Yi , Sun Li , Cheng Qiang , Wei Jiang
Published: November 2013

MODAPTS of Industrial Engineering (IE) work measurement was used for formulating welding hours. It was analyzed the program, operations and motion of production process on the arc welding production site. According to the theory of similar manufacturing principle, the auxiliary operation of the arc welding was divided into standard operation, typical operation and special operation. Their working hours were respectively analyzed and estimated. Arc welding operation time was treated as a set of the basic time and auxiliary operation sequence time. It is more scientific, rationalization and standardization for the welding hours, and improves the efficiency of formulating welding hours. A using example was given.
Dynamic Adjusting Mechanism of Counterbalance in Beam-Pumping Unit and its Kinetic Analysis
Authors: Kang Xiao Qing , Ren Tao , Qu Wen Tao
Published: November 2013

The purpose of conventional counterbalance mechanism featuring a fixed counterbalance torque is to balance the nonuniformity of polished rod load. Therefore, it cannot satisfy the demand of polish rod load which changes with well-condition and then leads to increase of power cost for decreasing quality of balance. This paper presents a new dynamic adjusting mechanism of counterbalance in beam-pumping unit that can adjust the counterbalance torque automatically without stopping the unit according to the new balance parameters derived by analyzing the variation of well-condition and increase productivity at the same time. A data comparison based on the corresponding kinetic model of transmission mechanism is also discussed.
Study on Earthenware Made by Low-Carbon Catalytic Combustion Furnace of Natural Gas
Authors: Zhu Li Qiang , Yu Zhi Chao , Zhang Shi Hong
Published: November 2013

In the paper, based on the results of lean gas furnace temperature field, the study was carried out on firing earthenware. Compared with earthenware which fired with electric furnace, earthenware fired with Low-carbon Catalytic Combustion Furnace was having apparent advantages: exquisite appearance, shorter time of firing it and no pollution, etc. It provides experimental support for ceramics technology further improvement and solves the environmental pollution problem of traditional burners.
Load Identification of Aircraft Airfoil
Authors: Wang Zheng Gang
Published: November 2013

According to the structure of the airfoil, cantilever plate is made to substitute airfoil. The function of load is fit by using the primary function sequence. The load identification is transformed into solution of the fitting coefficients; numerical simulation shows the method is effective. Finally, the factors of effecting precision are studied.
Numerical Simulation of Synthetic Jet Actuator and its Controlling Effect on the S-Inlet
Authors: Hu Yan Qing , Wu Nai Ming , Liu He
Published: November 2013

This paper presents a study of the tandem piston synthetic jet and its effect to the internal flow fields of the S-induct excited by the actuator using numerical simulation. The three-dimensional unsteady Reynolds averaged N-S equations and second order upwind scheme are employed. Structure grids are used for the computational model. Firstly, we numerically simulate the synthetic jet characterized by blowing and suction simultaneously and analyze its synthetic jet performance. Secondly, we apply this synthetic jets actuator to the S-induct, finding that the synthetic jets actuator makes a great effect to the S-induct. Results show that the secondary flow becomes weak, besides, S-induct total pressure recovery coefficient of the exit has improved at some extent.
The Study of Acceleration Effect for Piezoresistive Micro Pressure Sensor
Authors: Tian Bian , Zhao Yu Long , Niu Zhe
Published: November 2013

This paper reports the acceleration effect of a type of piezoresistive pressure sensor for micro-pressure measurement with a cross beam-membrane (CBM) structure. By using the finite element method (FEM) to analyze the stress distribution of the CBM structure and compared with the traditional structures under acceleration signals. Our results show that the sensitivity and linearity of the CBM is better than other structures, but also the acceleration disturb analysis indicating that the CBM structure offers low acceleration interference for micro-pressure measurement in vibration environments.
Preparation of Alumina from NaOH-NaAlO2-Na2CrO4-H2O Solutions by Carbonization Process
Authors: Wei Guang Ye , Qu Jing Kui , Zhang Pei Yu , Guo Qiang , Zheng Yu Dong , Qi Tao , Li Yue Hua
Published: November 2013

Alumina was prepared from NaOH-NaAlO2-Na2CrO4-H2O solutions (chromate alkali solutions) by carbonization process. The effect of seed ratio, carbon dioxide (CO2) volume fraction, reaction temperature, and initial sodium hydroxide (NaOH) concentration on the removal efficiency of Al was investigated in detail. High removal efficiency of Al was obtained following the increase of CO2volume fraction and temperature. While, initial NaOH concentration increases the stability of solution and reduces the removal efficiency of Al. Bayerite (Al (OH)3) with small content of Cr (VI) and Na2O was obtained from alkali metal chromate solutions at 50 °C with no seed. Particle size of bayerite (d50) was about 24 μm. Al2O3was obtained after calcination at 1050 °C for 1.5 h.
Research on Resistivity Measurement System of Submarine Sediment
Authors: Wu Lai Jie , Ma Bin , Yang Yuan Hong
Published: November 2013

This paper developed a resistivity measurement system on the platform of in-situ detector which based on seafloor drilling machine. In order to precisely process the weak voltage signal which outputted by the resistivity probe, the paper carried out the cross-correlation algorithm theoretical derivation and MATLAB simulation, then ported the algorithm to TMS320F28069 DSP processor and designed hardware. A mass of contrast experiment shows that the cross-correlation algorithm is an effective method to process weak signal. It can improve accuracy and anti-jamming ability of the submarine sediment resistivity measurement system. The method of submarine sediment resistivity measurement can be widely used in fields of marine geological survey, marine environment research, etc.
Simulation Analysis of Matrix Cone Angle in Ironing Stretch Technology of Two-Piece Can
Authors: Li Hong Bo , Yuan Yuan Wei , Zhang Jie , Chai Xiao Jun , Wang Bing Sheng , Kong Ling Guang
Published: November 2013

Matrix cone angle is an important parameter in the ironing stretch process of two-piece can body. On the base of analyzing the ironing stretch technology, finite element simulation method with ABAQUS software was applied to simulate ironing stretch process of can body, the influence of matrix cone angle on ironing stretch technology was analyzed quantitatively, and then the reasonable range of matrix cone angle was recommended. The result indicated that the best range of matrix cone angle is 6°~9°, which can provide reference for the mould optimization and technology formulation.
Method of Measurement System Analysis Techniques in the Manufacturing Quality Analysis
Authors: Wu Hua Zhi , Pan Xue Tao , Cai Jian Wen , Zhang Mei Feng
Published: November 2013

Quality analysis in manufacturing must use quality measurement data as the premise, degree of accuracy of quality characteristic measurement results depends on measuring system capacity and performance. The purpose of this paper is to study five analysis of variance of the measurement system which apply in the production site. With MM-60 microscope measurement system as an example, through data collection, evaluate its measurement capability, give the report that the measurement system meets the measurement requirements in production, in order to inprove quality control of product on production manufacturing.
Study of Radiation Damage in Diamond Film Implanted by B Ion
Authors: Yan Cui Xia
Published: November 2013

The radiation damage and its distribution in the type-Ib diamond film implanted by B ion have been investigated by means of Raman scattering and X-ray diffraction spectra. It is of significance during the applications of diamond materials due to several phenomena related to B-doped diamond, such as the superconductivity, the conversion of p-type to n-type conductivity and the low resistivity. The Raman scatting spectra indicated that the radiation damage in implantation layer was various with implantation depth. The top layer was damaged badly and graphitized completely. There existed small damage in nether layer, which resulted in partly amorphous carbon. It was noted that the volume was expanded in diamond film implanted by B ion. By x-ray diffraction pattern, it was reckoned that the lattice parameter was enlarged in B-implanting diamond layer, which expanded the volume of diamond film.
Analysis and Optimization of Marine Pumps Take-Off and Landing Platform Based on ANSYS
Authors: Zhou Chen Quan , Yu Ji , Shen Dan , Xia Zheng Peng , Liao Ping
Published: November 2013

Marine pumps take-off and landing platform is one of the important parts on the dredger, with its high performance, high benefit, make the pump under complex conditions running steadily, work safely and reliably, to ensure that the concentration of desilting. Its finite element model was established by applying the software ANSYS, the static analysis and buckling analysis of the model was carried out, the bench structure was improved according to the results of the analysis, in order to predict the performance of the work at the design stage, and provide theoretical basis for structure optimization design platform.
An Intelligent Winch Rope-Aligning System
Authors: Wu Lai Jie , Jiang Jin Guo , Li Xue Bin , Huang Liang
Published: November 2013

This paper studys an intelligent control system based on micro-computer in order to rope wire in a winch. It introduces the constituent parts and work principle of the system, analyzes moving direction rules of the rope-aligning device, calculation method of step number and speed regulation algorithm of the stepping motor. The system can adapt rope-aligning speed and distance to the wire diameter and the roller rotating speed. With good characteristic such as regulating speed quickly and smoothly, following roller rapidly and controlling itself intelligently, the system will be widely used in the future.
Degradation Mode Recognition for Battery of Electric Vehicle Based on ART2 Network
Authors: Yu Gang , Guo Mi Mi
Published: November 2013

In the process of describing the degradation process of battery of electric vehicle, degradation models under dynamic running conditions need to be analyzed in order to effectively forecast the remaining useful mileage and life of battery. This paper proposed a new method of pattern recognition based on ART2 network to distinguish the degradation mode of the battery of electric vehicle. First, the degradation mechanism is analyzed of the battery to extract the features of degradation process. Then the learning process of ART2 is designed for recognition of the degradation mode. After that, HMM is applied to research the dynamic changes of the degradation mode and predict future degradation mode sequences. Finally, experimental analysis based on batterys charge and discharge data proves the effectiveness of the proposed approach.
Multiscale Investigation on Interfacial Properties of Cu/Al Structures in Electronic Packaging
Authors: Zhang Li Qiang , Liu Dong Jing , Yu Li Jia , Zhao Yan Fang , Yuan Xiao Ming , Liu Jian , Yang Ping
Published: November 2013

With the development of micro/nanoelectronic technology and the miniaturization of IC (Integrated Circuit) packaging, the interfacial characteristics of the nanoscale interface structure in IC packaging become more and more serious on the whole performance of IC or devices. The FEM (finite element method) is used to estimate the thermodynamics properties of the Al-Cu interface structures at the macroscopic scale. Meanwhile, the NEMD (non-equilibrium molecular dynamics) method is used to investigate the interfacial heat transfer at the nanoscale. In the macroscopic scale, the deformation and nanocracks always appear at the outside edge of interface between Cu solder and Al pad due to the dissimilar thermal expand expansion coefficients. In the nanoscale, there is diffusion between different atoms at the interface, the diffusion thickness increases with the temperature increasing. The diffusion between Al and Cu atoms enhances the heat transfer with the temperature increasing. The results reveal the mechanism of the interfacial heat transfer and interfacial crack, which also supply a multiscale analysis method to evaluate the interfacial properties in the IC packaging, which is helpful to design and manufacture of IC assembly.
Design and Analysis of the Traction Mechanism of the Angle Interlocking Multilayer Loom of Carbon Fiber
Authors: Bai Yu , Yang Jian Cheng , Zhang Qing , Wang Hua Qing , Yang Kai , Qin Jian Feng , Hu Shuang Hu , Jiang Xiu Ming
Published: November 2013

This paper analyzes the traction mechanism of the angle interlocking multilayer loom of carbon fiber.It can enlarge the output force of the cylinder through the double-rocker stress amplification mechanism,which is applied to the upper roller,making the upper and lower roller compact, then pulling away the cloth by from the cloth woven mouth power system. This paper deduced the mathematical calculation formula of the moment .In addition,the simulation analysis of dynamics and statics for the key component of the model has been carried on. Through the finite element analysis software.Analysis shows that the parts could work according to schedule which provides a powerful guarantee for the realization of the function of the entire organization .
Phase Structure of (La,Mg,Nd)5Ni19 Hydrogen Storage Alloy
Authors: He Qiang , Guo Yong Quan , Zheng Zhen Zhen
Published: November 2013

The crystal structure of (La,Mg,Nd)5Ni19alloy has been investigated using powder x-ray diffraction. A Rietveld refinement is used to determine the phase structures for tying to find out the correlations of lattices among the phases in this hydrogen storage alloy. The results show that the alloy consists of three phases, which correspond to (La,Mg)3Nd2Ni19with a Pr5Co19-type structure, La (Mg,Nd)Ni7phase with a Ce2Ni7-type structure and (La,Mg)3Nd2Ni19with a Ce5Co19-type structure. Mg and Nd substitute for La atom at the 4f position for Pr5Co19-type and Ce2Ni7-type structures and the 6c position for Ce5Co19-type structure, respectively. It induces a good lattice match along the a-axisand b-axis among the three phases. The three kinds of structures might form a rod-like shape structural unit by stacking along the c-axis. This phase constitution seems to be beneficial for the cyclic stability of the hydrogen storage alloys.
Growth Mechanism of Micro-Arc Spark Deposited Stellite Alloy Coatings
Authors: Zhang Chun Hua , Wang Chao , Zhang Song , Wang Ming Sheng , Xie Yu Jiang , Tan Jun Zhe
Published: November 2013

Micro-arc spark deposition with Stellite6 alloy as the coating material on SCH13 steel substrates was carried out using high-energy micro-arc process with different processing parameters. The microstructure, chemical compositions and phase identification of the deposition layers were examined by using scanning electron microscopy (SEM), energy dispersive Xray spectroscopy (EDS) and X-ray diffraction (XRD), respectively. Meanwhile the form and growth mechanism of a single pulse deposit were focused on. The results show that the morphology of the single pulse deposit is splashshape. A large number of single pulse deposits deposited and superimposed continuously and then deposition layers with a certain thickness were formed. The epitaxial growth coating with columnar grains was then achieved by the micro-arc spark deposition. The prepared Stellite6 alloy coating has a good metallurgical combination with the SCH13 steel substrate and the elements at the interface are smooth transition. Because of the effects of the temperature gradient and the solidification rate, the microstructure of the deposition layer is slightly coarser with the increasing of the processing voltage. The coatings are consisted of γ-Co solid solution and chromium carbides.