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With the accelerated urbanization process, the emergence of urban underground integrated pipeline corridors is the trend for cities, especially large and medium-sized cities. However, due to the complexity of the internal system of the integrated corridor, there are various risks in the process of its construction and operation and maintenance, and the risk factors are complex and diverse. In this paper, we introduce ontology technology and knowledge base construction into the risk management of integrated pipeline corridor, build an ontology-based knowledge base of integrated pipeline corridor risk, and construct a Bayesian network based on the established risk knowledge base for risk evaluation of identified risk factors. The combination of ontology knowledge base construction and Bayesian network method of integrated pipeline corridor risk makes the risk identification system completer and more effective, and the method can effectively evaluate the disaster risk level of integrated pipeline corridor operation and maintenance, which can meet the practical needs of integrated pipeline corridor operation and maintenance risk management and disaster prevention and mitigation work.

For mass rapid transit (MRT) projects, the characteristics of MRT engineering include large scopes, long durations, complex interfaces, significant requirements for management, and complicated coordination and cooperation. Owing to the complexity of these projects, the use of building information modeling (BIM) technology will be necessary and helpful to improve construction management. The increasing application of BIM in the architecture, engineering, and construction (AEC) industries has strengthened the need for effective construction management for general contractors (GC) for BIM implementation during the construction phase. Collaboration-based BIM model development for GCs typically involves relevant participants from different fields during the construction phase of MRT projects. However, collaboration-based BIM model development tasks often create numerous practical problems (e.g., reworks and errors regarding BIM model development). As the BIM manager and engineers for the general contractor who handle BIM model development are located in different departments and different office locations in MRT construction projects, a centralized platform is needed to share the latest real-time BIM model developments for related participants. Effective collaboration-based BIM model development management (CBMDM) is therefore essential for GCs to obtain accurate BIM models before the implementation of BIM-related applications. While the latest information for collaboration-based BIM model development should be updated and tracked effectively for CBMDM for related participants during the development process, in practice, GCs lack systematic approaches and information management platforms for use in CBMDM tasks. Thus, this study proposes a novel approach and develops an information system to manage and track all CBMDM tasks for GCs during the BIM development process. The purpose of this study is to develop a CBMDM system to improve the efficiency of sharing and tracking information for CBMDM activities. The research scope of this study is to propose an approach and system for CBMDM work in large-scale construction and infrastructure projects. The CBMDM system assists users by providing workflow management of CBMDM tasks for BIM engineers and managers so users can manage all BIM model development tasks effectively. The proposed system can also be utilized for other types of large-scale construction projects for CBMDM tasks. Furthermore, to understand its effectiveness, the proposed CBMDM system is applied to a case study of an MRT project in Taiwan. Finally, the major practical advantages, disadvantages, and limitations of the system are identified for infrastructure projects.

Redundancy is an important component of structural robustness. A method is proposed based on the response sensitivity for assessment of the redundancy of structure under earthquake. Redundancy analysis is carried out for a single-layer reticulated dome subjected to earthquake condition. The result shows that the redundancy values are able to reveal the weak links in the structure. Members with a small redundancy are identified as structural weaknesses that are easily damaged under loads, and their failure may cause catastrophic consequences to the structure. Therefore, the members with small redundancies must be treated as key components of the structures.

In order to solve the low precision and difficult to sync, when the manual regulation of 3D Camera PTZ (Pan Tilt Zoom).The paper studies a 3D camera design (dual lens, horizontal support), and realize the remote control of double horizontal movement. The control module of the design based on single-chip stepper motor control theory, which can use the remote wireless remote control to it, and it has the high application value.

The development of CdTe/CdS solar cells on flexible substrates is reviewed in this article. Photovoltaic structures on lightweight and flexible substrates have several advantages over the heavy glass based structures in both terrestrial and space applications. The cells mounted on flexible foil are not fragile, the requirements of the supporting structures are minimum and they can be wrapped onto any suitably oriented or curved structures. The specific power of the solar cells is an important factor in space applications and hence development of photovoltaic devices on light weight substrates is interesting. CdTe is one of the leading candidates for photovoltaic applications due to its optimum band gap for the efficient photo-conversion and robustness for industrial production with a variety of film preparation methods. Flexible solar cells with conversion efficiencies exceeding 11% have been developed on polyimide foils. The development of CdTe devices on metallic substrates is impeded due to the lack of a proper ohmic contact between CdTe and the substrate. The polymer substrate has the advantage that the devices can be prepared in both “superstrate” and “substrate” configurations.

Automatic particle counter is widely used in particle size analysis, fluid particle pollution degree and filtering properties testing. In this article, the test-bed of Zhejiang Universe Filter Product Qulity Test Center used in fuel filtration efficiency test is introduced. According to the domestic and foreign relevant test standard, this test-bed adopts particle counting and multi-pass method for experimenting of international general approval. And by using the test-bed, we can manage to test and analyse filtration efficiency and dust holding capacity of automotive fule filter.

A thin Ag layer embedded between layers of zinc tin oxide (ZTO) are compared to cells using an indium tin oxide electrode was investigated for inverted organic bulk heterojunction solar cells employing a multilayer electrode. ZTO/Ag/ ZTO (ZAZ) electrode is the preparation at room temperature, a high transparency in the visible part of the spectrum, and a very low sheet resistance comparable to treated ITO without the need for any thermal post deposition treatment as it is necessary for ITO. The In-free ZAZ electrodes exhibit a favorable work function of 4.3 eV and are shown to allow for excellent electron extraction even without a further interlayer. This renders ZAZ a perfectly suited bottom electrode for inverted organic solar cells with simplified cell architecture.

Tube blanking has application potential in bearing manufacturing. However, compared with sheet blank, tube balnking has been rarely studied yet. In order to achieve an intensive understanding of the mechanism of the tube blanking process, a finite element analysis has been carried out by using the commercial software package ANSYS. According to the special requirement of the tube blanking, the major process attributes, such as punch-die clearance, edge radii of tools and contact between tool/workpiece have been taken into account in the finite element model. The tube material is 20 mild carbon steel and dimensions are 42.2 mm in outer diameter and 5.3 mm in wall thickness. The distributions of the stress and the equivalent plastic strain have been computed for discussion. It has been realized that the stress status around the tool corners plays an important role in crack generation and growth, thus decides the blanking quality.

Laser tube bending is a kind of plastic forming method with high flexibility, and is suitable for the low ductility material and thin thickness tube. This paper proposes a systematic scheme for three-dimensional tube bending, which forms the tube by varying the bending position and bending direction continuously. The bending part is simplified as a three-dimensional curve and then the curve is divided into segments and substituted with line sections. The scheme takes the angle between two adjacent segments as the laser bending angle at each bending position and the angle between two adjacent bending plane as the variation of bending direction. The effectiveness of proposed scheme is verified with the forming of a helical tube experimentally. The dimension errors of the formed helical tube are 6.25% in diameter and 7.59% in pitch respectively.

The cracks in clad layer are the most often defects in laser cladding of low ductility materials. This paper reports the efforts of crack prediction with finite element method. The process is modeled with commercial FEM software package ANSYS and the thermal-mechanical analysis is performed to inquire the strain-stress variation during cladding, especially the variation around the moment of solidification. The analysis result shows that, by the end of cladding, the clad layer is in tension stress and the stress values are varied in directions. The tension stress along the cladding direction is the maximum one, which causes the cracking in clayed layer. Increasing the preheating temperature of substrate is an effective way to avoid the crack generation.

This paper presents an efficient flexible organic solar cell with room temperarure sputtered and highly conductive nickle oxide (NiO) thin film as hole transporting layer. The strcture of this kind of devices is PET/ITO/NiO/P3HT: PCBM [regioregular of poly (3-hexylthiophene):(6,6)-phenyl C61 butyric acid methyl ester] /Al. On the study of characteristics of Nickle oxide thin film, such as sputtering temperature, thickness, and oxygen proportion, we found that NiO with 10 nm and sputtered at room temperature shows the best photovoltaic properties. The highest power conversion efficiency (PCE) of 3.26% and 2.5% were achieved on glass substrate and flexible substrate individually. The device photovoltaic properties were discussed in terms of the band diagrams and series resistance of the devices. Also the properties of nickle oxide thin film on different conditions were investigated too.

The preparation and characteristics of ZnO(Zinc oxide) co-sputtered TaO (Ta oxide) electrodes(ZTO) grown on glass substrates using a specially designed composite target for use in organic solar cells are described. It was found that both the electrical and optical properties of the ZTO films were critically dependent on the Ar/O2 flow ratio and sputtering power. In addition, all ZTO electrodes show amorphous structure regardless of the Ar/O2 flow ratio, due to the low substrate temperature. We obtained the ZTO electrode with sheet resistance of 30 Ohm/square and average optical transmittance of 80% in room temperature. The conversion power efficiency by using ZTO electrode at optimized conditions is 2.6 %.

Liver involvement in patients with hereditary hemorrhagic telangiectasia (HHT) has not been fully characterized in China. The clinical manifestations, imaging studies, results of treatment in six patients and symptomatic liver involvement were analyzed. Patients included three women and three men with age from 35 to 62 years old. Two patients presented with shortness of breath, one patient with anemia and splenomegaly, and one with chronic gastrointestinal bleeding; the remaining two were asymptomatic. CT and CT angiography (CTA) showed arterioportal and arteriovenous shunting in liver. CTA showed at least one enlarged hepatic artery in all patients. One patient received ligation of the enlarged arteries with subsequent disappearance of symptoms at 56-month follow-up. The patient with gastrointestinal bleeding received interventional embolotherapy and resolved; interventional therapy to embolize the enlarged hepatic arteries was unsuccessful in another patient and the patient died of heart failure and liver dysfunction 38 months later. The patient with splenomegaly received a splenectomy and bandage of an enlarged hepatic artery. One of the two patients with no symptoms died of liver dysfunction 41 months after diagnosis. The other showed abnormal liver function and ascites, and traditional Chinese medicinal herb was used with no effect 21 months later. The symptoms disappeared after systemic medical treatment. Individualized and active therapy is advantageous and proper for patients with HHT.

In this paper, we present a comprehensive experimental study on the blanking process of thick wall metal tube. The tube used in experiment is GCr15 bearing steel with 56 mm in outer-diameter and 6.5 mm in wall-thickness. The experiment was conducted with an experimental blanking apparatus, which consists of fixed die, moving die and inner cores rod. Two blanking schemes, single punching and cross punching, are compared through experiment. The single punching scheme is realizable for tube blanking but the effect is not acceptable in recent stage. Cross scheme is a better choice for tube blanking as the surface roughness in blanking section can be greatly improved. In cross scheme, the first penetration depth is the key factor to final blanking quality. It was found through experiment that the adequate first penetration depth is around 60 percent of the wall thickness of the tube.

The knowledge of the flow behavior of metals during hot deformation is of great importance in determining the optimum forming conditions. In this paper, the flow stress of 00Cr17Ni14Mo2 (ANSI 316L) austenitic stainless steel in elevated temperature is measured with compression deformation tests. The temperatures at which the steel is compressed are 800-1100°C with strain rates of 0.01-1s-1. With the experiment result as the training set, the flow stress of 00Cr17Ni14Mo2 steel during hot deformation is predicted using a BP artificial neural network. The architecture of the network includes three input parameters, one output parameter and two hidden layers with 5 neurons in first layer and 6 neurons in second layer. Compared with the regression method, the prediction using the BP artificial neural network has higher efficiency and accuracy.

The knowledge of the flow behavior of metals during hot deformation is of great importance in determining the optimum forming conditions. In this paper, the flow stress of 00Cr17Ni14Mo2 (ANSI 316L) austenitic stainless steel in elevated temperature is measured with compression deformation tests. The temperatures at which the steel is compressed are 800-1100°C with strain rates of 0.01-1s-1. A mathematical regression model is proposed to describe the flow stress and the validation of the model is conducted also. The proposed model can be used to predict the corresponding flow stress-strain response of 00Cr17Ni14Mo2 stainless steel in elevated temperature for the numerical simulation and design of forming process.

目的 探讨居家营养支持护理干预对预防家庭肠内营养支持患者并发症发生和提高护理工作满意度的效果。方法 以在我院实行家庭肠内营养支持治疗与规范化护理模式的213例患者作为观察组；在南京市某三甲医院进行家庭肠内营养支持治疗及传统护理模式的185例患者作为对照组，比较两组患者6个月后的并发症发生率及对护理工作的满意度。结果 观察组患者在导管堵塞和腹泻发生率方面明显低于对照组（ P ＜0.01），对护理工作满意度明显高于对照组，且差异有统计学意义（97% vs.74%， P ＜0.01）。结论 规范化的护理干预可有效降低家庭肠内营养支持患者并发症的发生率，改善患者预后，并提高患者对护理工作的满意度。

A new method to design multi-band filters is proposed by inserting electric and magnetic resonances to increase the selectivity of the lower and upper edge of the passband. A dual-band filter composed of regular hexagon cascaded complementary split rings resonator pairs (RH-CCSRRP) and regular hexagon cascaded complementary ring resonator (RH-CRR) are designed. Simultaneously, the proposed filter has been detailed investigated by the method of electromagnetic (EM) parameters extraction process. For verification of the new method, a tri-band filter is designed. The results show that both the filters have a good performance of compact dimensions, which is only 0.19 λg × 0.14 λg, low insertion loss and sharp selectivity.

This study attempts to evaluate the outcome of autologous peripheral blood hematopoietic stem cell transplantation (auto-PBHSCT) in patients with severe paediatric systemic lupus erythematosus (SLE). Five patients (n = 2 females, n = 3 males) with severe or refractory paediatric SLE received autologous peripheral blood CD34+ cell transplants between July 2005 and February 2009. The patients ranged in age from 6 to 14 years, and the course of disease extended over a period from 5 to 90 months. All of the patients received conventional therapy for 3 to 87 months. After their discharge from the hospital, the patients continued to maintain their regular follow-up visits and basic quality of life. The patients exhibited decreased immune function after the auto-PBHSCT. The CD4+ and CD19+ cells were significantly reduced. Viremia occurred in four patients 2 months after the transplantation. All of the patients went into clinical remission in 3-6 months. The severity of encephalopathy, nephritis and organ damage declined in varying degrees. The disease recurred in patient 2 at 9 months and in patient 4 at 12 months after the transplantation. Because the disease was relatively mild, we were able to administer small doses of glucocorticoids that were sufficient to control the course of the disease. Macrophage activation syndrome occurred in patient 3 at 18 months after the transplantation. At the end of the follow-up period, three of the five patients were completely off their medications. Another two patients sustained small doses of glucocorticoids. The developmental levels of these patients were comparable to those of normal children at the end of the follow-up. The quality of life improved significantly. The auto-PBHSCT is effective for severe and refractory paediatric SLE. The incidence of lethal infection and other adverse reactions is low. Long-term remission can be achieved. A milder form of the disease may have recurred after the transplantation.

Bayesian network is a graphical model that encodes probabilistic relationships among nodes of interest. The automated creation of Bayesian networks can be separated into two tasks. Structure learning, which consists of creating the structure of the Bayesian networks from the collected data and parameter learning, which consists of calculating the numerical parameters for a given structure. A Voting EM algorithm which is based EM be discussed and applied in the online parameter learning in flood decision Bayesian networks in this paper. Both EM and Voting EM algorithm are applied in flood decision Bayesian networks to compared their performance. The result indicates that the Voting EM can be used in the online learning for Bayesian network parameter and it also has more precisely that general EM algorithm.

A Bayesian network is a graphical model that encodes probabilistic relationships among variables of interest. Bayesian networks are based on probability theory. We describe the principle of Bayesian probability and Bayesian networks. The automated creation of Bayesian networks can be separated into two tasks, structure learning, which consists of creating the structure of the Bayesian networks from the collected data, and parameter learning, which consists of calculating the numerical parameters for a given structure. We focus on the structure-learning problem of a flood decision supporting system. The algorithm WILD is used to discretize the continuous attributes in the flood database. The Bayesian network in the flood decision supporting system is obtained by K2. Explanations of the model are given. We describe an important process in exploiting decision supporting systems using Bayesian networks. It is shown that the model is correct and the Bayesian network is a good approach in a flood decision supporting system.

Expression of lung resistance protein in patients with gastric carcinoma and its clinical significance

Using IgH and TCR gamma gene rearrangements as gene markers, we detected minimal residual disease (MRD) by means of the polymerase chain reaction (PCR) and restriction analysis. Of 18 children with acute lymphoblastic leukemia (ALL), MRDs were detected in 9 patients after termination of therapy. All 18 patients had been followed for 1.5 to 102 months after detection. Three of the nine MRD-positive patients relapsed within 3 to 6 months; none of the nine MRD-negative patients relapsed. We suggest that MRD negativity at the end of therapy might be an important factor for long-term disease-free survival, because the negative cases had a very low risk of relapse. Because the outcome for MRD-positive cases is more difficult to evaluate, patients with MRD after termination of therapy should be monitored.