<strong>Objective: </strong>The purpose is to formulate treatment strategies of batches of the wounded and partial first-aid procedures, and further improve the emergency rescue capability of hospitals. &l...<strong>Objective: </strong>The purpose is to formulate treatment strategies of batches of the wounded and partial first-aid procedures, and further improve the emergency rescue capability of hospitals. <strong>Methods: </strong>This study analyzed the emergency treatment case that we participated in. In this case, we used various means to start the emergency plan, run the emergency procedures, optimize diagnosis, treatment, and rescue procedures, mobilize medical rescue resources, provide a reference for emergency command decisions, formulate a set of coping strategies of tertiary general hospitals on public emergencies. <strong>Results:</strong> Through the scientific and effective management of our hospital, 20 wounded have been discharged from the hospital and achieved the ideal effect of zero deaths in the hospital. <strong>Conclusions:</strong> The new mode of first-aid and health emergency management on the scene of modern disaster needs to find ways to minimize the loss of life and property brought by public emergencies, integrate the various sections of modern disaster medicine, integrate a large number of international and domestic basic and clinical research achievements of disaster first-aid, and upgrade to information, digital system.展开更多
Pancreatic head carcinoma is characterized by high malignancy and a low survival rate and its mortality ranks fourth for malignant tumors with a 5-year survival rate of only 5%[1].Treatment of this cancer relies on su...Pancreatic head carcinoma is characterized by high malignancy and a low survival rate and its mortality ranks fourth for malignant tumors with a 5-year survival rate of only 5%[1].Treatment of this cancer relies on surgical resection.However,the resection rate is only about 20%,because majority of the patients are classified as unresectable when diagnosed due to distant metastasis or展开更多
The present work relates to a process for silicon surface texturing for preparing large-area, silicon nanotextures on silicon substrates at ambient temperature by assisted chemical etching. A novel strategy comprises ...The present work relates to a process for silicon surface texturing for preparing large-area, silicon nanotextures on silicon substrates at ambient temperature by assisted chemical etching. A novel strategy comprises of two fundamental steps (metal-assisted chemical etching (MACE) and solution post-treatment) of using the silver catalyst to obtain specific nano- or micro-textures. The strategy is based on metal-induced (Ag) local oxidation and dissolution of a silicon substrate in three different concentrations of aqueous fluoride solution with the post-treatment solution. The etching technique is dependent on the etching time and concentration of aqueous fluoride solution. Therefore, detailed scanning electron microscopy observations reveal specifics shapes as inverted pyramids, cubic nano-microholes, spiroconical nano-microholes and rhombohedral-stared nanosheet bouquets (called Nanobukets), obtained for the first time on a (100) silicon surface by this new variant of the MACE method named Double Etching Method (DEM). Silicon nanostructures are used in many nanotechnology applications such as nano-microelectronics, optoelectronics or biomedical applications. UV-Visible spectrometry measurements carried out made it possible to obtain the lowest reflectance and highest absorbance values who are 3% and 97%, respectively for the rhomboedral-stared nanosheet bouquets on (100) crystalline silicon substrates in the UV-visible-NIR wavelength range from 300 to 1200 nm.展开更多
The performance evaluation of existing flexible pavements has become a priority issue for many highway maintenances engineers.To make appropriate rehabilitation and management decisions,the engineers most often rely o...The performance evaluation of existing flexible pavements has become a priority issue for many highway maintenances engineers.To make appropriate rehabilitation and management decisions,the engineers most often rely on efficient methods for the determination of the strength of pavement layers.Resilient modulus is a very important parameter to be identified and used in pavement design.The resilient moduli of asphalt mixtures are typically measured using the indirect tension test procedure in compliance with the ASTM D4123 standard that is superseded by ASTM D7369.The standard requirement is that the prepared specimens for the tests should have a minimum height of the sample over its diameter ratio of 0.4.Generally,specimens used in the tests are either a nominal 100 mm or 150 mm in diameter with a minimum thickness over diameter ratio of 0.4.However,100 mm diameter core specimens taken from site wearing courses with thicknesses ranging from 40 mm to 50 mm most often do not fulfil the minimum ratio of 0.4 after they are trimmed for testing.Since there was no any option,part of the binder courses had to be trimmed to make up for the minimum ratio requirement.This tends to result in inaccurate assessment of the resilient modulus values of the samples.As such,a new procedure was explored to test specimens smaller than 100 mm in diameter.This may minimize the material volume requirement from the field and also for the fabrication of smaller samples in the laboratory.Based on the available thickness of wearing course or overlay,the appropriate sizes were determined.For a two-layer system a 56.3 mm diameter was deemed necessary while a 37.5 mm diameter was observed to be appropriate for a three-layer system.Such an approach for resilient modulus test using miniature specimens of 56.3 mm and 37.5 mm in diameter has a great potential for practical relevance for the industry.展开更多
This paper presents a 6-b successive approximation register （SAR） ADC at the sampling rate of 600 MHz in a 65 nm CMOS process. To pursue high speed, this design employs the idea of the 2-b/stage. Based on this, the ...This paper presents a 6-b successive approximation register （SAR） ADC at the sampling rate of 600 MHz in a 65 nm CMOS process. To pursue high speed, this design employs the idea of the 2-b/stage. Based on this, the proposed structure with a new switching procedure is presented. Compared with traditional structures, it optimizes problems cause by mismatches of DACs and saves power. In addition, this paper takes advantage of dis- tributed comparator topology to improve the speed, while the proposed structure and self-locking technique lighten the kickback and offset caused by multiple comparators. The measurement results demonstrate that the signal-to- noise plus distortion ratio （SNDR） is 32.13 dB and the spurious-free dynamic range （SFDR） is 44.05 dB at 600 MS/s with 5.6 MHz input. By contrast, the SNDR/SFDR respectively drops to 28.46/39.20 dB with Nyquist input. Fabricated in a TSMC 65 nm process, the SAR ADC core occupies an area of 0.045 mm2 and consumes power of 5.01 mW on a supply voltage of 1.2 V resulting in a figure of merit of 252 fJ/conversion-step.展开更多
目的:探索临床实际情境下新护士规范化培训技能考核的客观评价方法。方法:采取技能直接观察考核法(Direct Observation of Procedural Skills,DOPS),在临床实际情境下对新护士从技能操作中所展现的行为与能力共10个指标进行考核。结果:...目的:探索临床实际情境下新护士规范化培训技能考核的客观评价方法。方法:采取技能直接观察考核法(Direct Observation of Procedural Skills,DOPS),在临床实际情境下对新护士从技能操作中所展现的行为与能力共10个指标进行考核。结果:除"操作前的解释和知情同意"超出预期目标外,其余9项指标均为接近或达到预期目标;其中"操作中相关制度、法律、行业标准的执行""患者体验""操作后处置"是新护士临床技能中最薄弱的项目,未达到预期目标的人员比例>17%;传统考核法与DOPS考核法在平均成绩上无统计学差异(P>0.05),但DOPS考核法对技能中行为与能力的评价较传统考核法更敏感。结论:DOPS考核法是临床实际情境下客观多维度评价新护士临床技能中行为与能力的方法。展开更多
文摘<strong>Objective: </strong>The purpose is to formulate treatment strategies of batches of the wounded and partial first-aid procedures, and further improve the emergency rescue capability of hospitals. <strong>Methods: </strong>This study analyzed the emergency treatment case that we participated in. In this case, we used various means to start the emergency plan, run the emergency procedures, optimize diagnosis, treatment, and rescue procedures, mobilize medical rescue resources, provide a reference for emergency command decisions, formulate a set of coping strategies of tertiary general hospitals on public emergencies. <strong>Results:</strong> Through the scientific and effective management of our hospital, 20 wounded have been discharged from the hospital and achieved the ideal effect of zero deaths in the hospital. <strong>Conclusions:</strong> The new mode of first-aid and health emergency management on the scene of modern disaster needs to find ways to minimize the loss of life and property brought by public emergencies, integrate the various sections of modern disaster medicine, integrate a large number of international and domestic basic and clinical research achievements of disaster first-aid, and upgrade to information, digital system.
基金supported by a grant from Beijing Municipal Administration of Hospitals’Mission Plan(SML 20152201)
文摘Pancreatic head carcinoma is characterized by high malignancy and a low survival rate and its mortality ranks fourth for malignant tumors with a 5-year survival rate of only 5%[1].Treatment of this cancer relies on surgical resection.However,the resection rate is only about 20%,because majority of the patients are classified as unresectable when diagnosed due to distant metastasis or
文摘The present work relates to a process for silicon surface texturing for preparing large-area, silicon nanotextures on silicon substrates at ambient temperature by assisted chemical etching. A novel strategy comprises of two fundamental steps (metal-assisted chemical etching (MACE) and solution post-treatment) of using the silver catalyst to obtain specific nano- or micro-textures. The strategy is based on metal-induced (Ag) local oxidation and dissolution of a silicon substrate in three different concentrations of aqueous fluoride solution with the post-treatment solution. The etching technique is dependent on the etching time and concentration of aqueous fluoride solution. Therefore, detailed scanning electron microscopy observations reveal specifics shapes as inverted pyramids, cubic nano-microholes, spiroconical nano-microholes and rhombohedral-stared nanosheet bouquets (called Nanobukets), obtained for the first time on a (100) silicon surface by this new variant of the MACE method named Double Etching Method (DEM). Silicon nanostructures are used in many nanotechnology applications such as nano-microelectronics, optoelectronics or biomedical applications. UV-Visible spectrometry measurements carried out made it possible to obtain the lowest reflectance and highest absorbance values who are 3% and 97%, respectively for the rhomboedral-stared nanosheet bouquets on (100) crystalline silicon substrates in the UV-visible-NIR wavelength range from 300 to 1200 nm.
文摘The performance evaluation of existing flexible pavements has become a priority issue for many highway maintenances engineers.To make appropriate rehabilitation and management decisions,the engineers most often rely on efficient methods for the determination of the strength of pavement layers.Resilient modulus is a very important parameter to be identified and used in pavement design.The resilient moduli of asphalt mixtures are typically measured using the indirect tension test procedure in compliance with the ASTM D4123 standard that is superseded by ASTM D7369.The standard requirement is that the prepared specimens for the tests should have a minimum height of the sample over its diameter ratio of 0.4.Generally,specimens used in the tests are either a nominal 100 mm or 150 mm in diameter with a minimum thickness over diameter ratio of 0.4.However,100 mm diameter core specimens taken from site wearing courses with thicknesses ranging from 40 mm to 50 mm most often do not fulfil the minimum ratio of 0.4 after they are trimmed for testing.Since there was no any option,part of the binder courses had to be trimmed to make up for the minimum ratio requirement.This tends to result in inaccurate assessment of the resilient modulus values of the samples.As such,a new procedure was explored to test specimens smaller than 100 mm in diameter.This may minimize the material volume requirement from the field and also for the fabrication of smaller samples in the laboratory.Based on the available thickness of wearing course or overlay,the appropriate sizes were determined.For a two-layer system a 56.3 mm diameter was deemed necessary while a 37.5 mm diameter was observed to be appropriate for a three-layer system.Such an approach for resilient modulus test using miniature specimens of 56.3 mm and 37.5 mm in diameter has a great potential for practical relevance for the industry.
基金Project supported by the National High-Tech Research and Development Program of China(No.2013 AA014101)the National Science and Technology Program of China(No.2012BAI13B07)
文摘This paper presents a 6-b successive approximation register （SAR） ADC at the sampling rate of 600 MHz in a 65 nm CMOS process. To pursue high speed, this design employs the idea of the 2-b/stage. Based on this, the proposed structure with a new switching procedure is presented. Compared with traditional structures, it optimizes problems cause by mismatches of DACs and saves power. In addition, this paper takes advantage of dis- tributed comparator topology to improve the speed, while the proposed structure and self-locking technique lighten the kickback and offset caused by multiple comparators. The measurement results demonstrate that the signal-to- noise plus distortion ratio （SNDR） is 32.13 dB and the spurious-free dynamic range （SFDR） is 44.05 dB at 600 MS/s with 5.6 MHz input. By contrast, the SNDR/SFDR respectively drops to 28.46/39.20 dB with Nyquist input. Fabricated in a TSMC 65 nm process, the SAR ADC core occupies an area of 0.045 mm2 and consumes power of 5.01 mW on a supply voltage of 1.2 V resulting in a figure of merit of 252 fJ/conversion-step.
文摘目的:探索临床实际情境下新护士规范化培训技能考核的客观评价方法。方法:采取技能直接观察考核法(Direct Observation of Procedural Skills,DOPS),在临床实际情境下对新护士从技能操作中所展现的行为与能力共10个指标进行考核。结果:除"操作前的解释和知情同意"超出预期目标外,其余9项指标均为接近或达到预期目标;其中"操作中相关制度、法律、行业标准的执行""患者体验""操作后处置"是新护士临床技能中最薄弱的项目,未达到预期目标的人员比例>17%;传统考核法与DOPS考核法在平均成绩上无统计学差异(P>0.05),但DOPS考核法对技能中行为与能力的评价较传统考核法更敏感。结论:DOPS考核法是临床实际情境下客观多维度评价新护士临床技能中行为与能力的方法。
