Pancreatic cancer is a cancer which starts from the cells of the pancreas, a glandular organ. The pancreas functions as both an exocrine and an endocrine gland. Cells in the exocrine pancreas secrete digestive enzymes into the small intestine. The endocrine pancreas produces hormones, such as glucagon and insulin, which influence glucose metabolism. Based on the site of initiation, pancreatic cancer is classified into exocrine and endocrine pancreatic cancer. When pancreatic cancer cells spread to other parts of the body, it is known as metastatic pancreatic order. The incidence and mortality rate of pancreatic cancer is higher in men than in women. SEER projected the number of new cases for pancreatic cancer in the US, in 2014, to be 46,420, accounting for 2.8 percent of new cancer cases. It also estimates that in 2014, 39,590 deaths, accounting for 6.8 percent of the total cancer deaths in the US, would be due to pancreatic cancer.

关键词：胰腺癌；腺体器官；外分泌腺；内分泌腺

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High quality of air is essential for a healthy human life. Indoor air quality refers to the quality of the air that circulates in and around various structures and buildings. Indoor air quality products and services help improve the quality of the air within buildings. Indoor air pollution could cause health hazards and consequently, the demand for indoor air quality products and services from various end-users is increasing.

关键词：空气质量；健康；室内空气质量；产品和服务

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H1N1 influenza (zoonotic) is an infectious disease in humans caused by the H1N1 virus. The H1N1 virus infects the nose, throat, and lungs of the host. It is an RNA virus and a type of influenza A virus belonging to the Orthomyxoviridae family. Influenza A viruses can infect different animal species such as humans, swine, birds, seals, and horses. On the basis of the antigenicity of their surface glycoproteins, influenza A viruses can be subdivided into neuraminidase and hemagglutinin. The hemagglutinin component is used by the virus to bind to host cell receptors, thereby facilitating viral entry into the host cell. The neuraminidase protein enzymatically cleaves terminal sialic acid residues from mucins, thereby allowing the virus to reach underlying cells in the respiratory tract. The elderly, young children, and people with medical conditions such as liver disorders, blood disorders, kidney disorders, chronic lung disease, asthma, and neurodevelopmental and neurological conditions are more susceptible to the infection. Influenza vaccines are administered for active immunization against the influenza virus, conferring protection against the disease. Vaccination of high-risk groups prevents unnecessary hospitalizations and premature deaths because of the disease.

关键词：甲型H1N1流感；人类感染性疾病；正粘病毒科；高危人群；预防接种

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Premature ejaculation is a sexual dysfunction in men wherein the semen is expelled with minimal penile or sexual stimulation.

关键词：早泄；性功能障碍；性刺激；IELT；主早泄；继发性早泄

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A printed battery is a thin and flexible battery composed of zinc (anode) and manganese dioxide (cathode) and is printed on a recyclable plastic. The output voltage from the battery is 1.5V with a peak drain current of 1mA. Printed batteries are used mainly for short-lifetime and low-power-source applications. As these batteries are produced using eco-friendly materials, they can be easily disposed of with household waste. The most important feature of a printed battery is that it is inexpensive. Printed batteries are used in a variety of devices such as passive RFID tags, temperature sensors, cosmetics and pharmaceuticals, interactive packaging, and smart cards.

关键词：印刷电池；短寿命；低功率源；环保材料

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A hydraulic cylinder is a mechanical actuator that produces linear motion and unidirectional force by using pressurized hydraulic fluid. It converts the energy stored in the hydraulic fluid into a force, allowing linear motion of the cylinder. A hydraulic cylinder consists of a cylinder barrel, cylinder cap, piston rod, piston, cylinder base, rod gland, cushions, seal, and cylinder base connection. Hydraulic cylinders are classified into two types according to their function: singleacting cylinders and double-acting cylinders. In single-acting cylinders, fluid is pressurized from one side of the cylinder during extraction and expansion, while in double-acting cylinders fluid is pressurized from both sides. Double-acting cylinders are further divided into two types: single rod end cylinders and double rod end cylinders. Plunger cylinders, telescoping cylinders, cable cylinders, and diaphragm cylinders are some of the hydraulic cylinders available in the Global Hydraulic Cylinders market.

关键词：液压缸；产生线性运动；单向机械致动器；加压；液压流体

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COPD covers various progressive lung diseases including emphysema, chronic bronchitis, refractory (non-reversible) asthma, and some forms of bronchiectasis. It is a serious condition that restricts airflow in the lungs and is characterized by increasing breathlessness. The exact etiology of COPD is not understood; however, most cases of COPD are caused by genetic factors and by inhaling pollutants such as smoking, fumes, and chemicals. As the disease develops, the symptoms tend to get worse if an infection occurs in the lungs. While the disease cannot be cured, it can be managed and treated.

关键词：慢性阻塞性肺病；支气管扩张；肺部限制气流；提高呼吸困难

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关键词：防弹衣；防护服；偏转削减；棍棒；渗透攻击

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A PV inverter is a device that converts the DC current from solar panels into AC current of the required frequency, which is then supplied to the electric grid. The device uses the MPPT technique to extract the maximum amount of power from an array of solar panels. Though it functions just as a simple converter, a PV inverter is the most essential part of a solar power plant.

关键词：光伏逆变器；直流电流；太阳能电池板；最大功率点

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Hydro-pumped storage is an altered use of conventional hydropower technology to store and manage energy. Hydro-pumped storage projects store electricity by circulating water between an upper and lower reservoir. The electrical energy is converted to potential energy and stored in the form of water at an upper elevation. Pumping the water uphill for temporary storage recharges the battery, and during periods of high electricity demand the stored water is released back through the turbines and converted back to electricity as in the case of a conventional hydropower station. Hydro-pumped storage cycle efficiencies exceed 80 percent, unlike other energy storage and thermal technologies that have lower efficiency.

关键词：水电抽水蓄能；存储；管理能源；循环水水力发电

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