水泥密度测试方法研究-医疗器械网

水泥密度测试方法研究

lotina 2023-03-30 17:51:44 11 浏览

水泥是最重要的建筑材料，广泛应用于建筑、水利、国防、基础设施等工程，其质量的重要性不言而喻

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lotina 2023-03-30 17:53:37

传统的水泥密度测定方法是“李氏瓶法”，有操作复杂，精度低等不足。

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水泥密度测试方法研究: 水泥是最重要的建筑材料，广泛应用于建筑、水利、国防、基础设施等工程，其质量的重要性不言而喻

医疗器械研发工具简介: 一、MDDT的定义和类型（一）MDDT的定义MDDT是用于评价医疗器械有效性、安全性或性能的方法、材料或测试，需经过科学验证和FDA认证，面向大众免费开放，用于帮助医疗器械研发人员更有效地预测和评价产品性能，也用于帮助FDA更高效地做出医疗器械审评决策。（二）MDDT的类型1.临床结局评价COA包括患者、医生、观察者报告结局及功能测试结局，通常采用评级或评分的形式。COA不仅包括测量方法，还包括使用说明、数据收集标准格式以及对目标人群结果评分、分析和解释的方法等。常见的COA包括：（1）患者报告结局PRO是未经医生或其他人修正或解释的由患者报告的健康状况结局。患者自身才能感知的某些症状（如疼痛或恶心严重程度）只能通过PRO进行评价，另外，PRO也用于评价患者的功能或活动能力。（2）观察者报告结局ObsRO由父母、医护人员或其他病患观察者报告，不包含临床判断和解释，适用于婴儿或者有认知缺陷的人，例如父母对婴儿呕吐发作的记录报告。（3）医生报告结局ClinRO包含了医护人员观察到的患者症状、行为和功能障碍以及对此进行的临床判断和解释。（4）功能测试结局

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[8]未定义数组索引: page
[2]Declaration of app\common\model\Question::getAllList($filter = Array, $limit = 16, $with = Array, $order = Array) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\QuestionSection::getList($filter = Array) should be compatible with app\common\model\BaseModel::getList($filter = Array, $sort = Array)
[2]Declaration of app\common\model\QuestionSection::getAllList($filter = Array, $limit = 8) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\QuestionAnswer::getAllList($filter = Array, $limit = 16) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8192]Function create_function() is deprecated
[8192]Function create_function() is deprecated
[8]未定义数组索引: area
[8]未定义数组索引: st
[2]Declaration of app\common\model\Topic::getList($filter = Array) should be compatible with app\common\model\BaseModel::getList($filter = Array, $sort = Array)
[2]Declaration of app\common\model\Topic::getAllList($filter = Array, $field = 'id,md5,tit...', $limit = 0) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\TopicInfoList::getAllList($filter = Array, $limit = 8) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\News::getAllList($filter = Array, $limit = 16, $order = Array, $with = Array) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\QuestionModuleList::getList($filter = Array) should be compatible with app\common\model\BaseModel::getList($filter = Array, $sort = Array)
[2]Declaration of app\common\model\QuestionModuleList::getAllList($filter = Array, $limit = 8) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8]未定义数组索引: center
[8]未定义变量: template
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组下标: 0
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组下标: 0
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: max_page

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[ SQL ] SHOW COLUMNS FROM `user` [ RunTime:0.001192s ]
[ SQL ] SHOW COLUMNS FROM `question_section` [ RunTime:0.000921s ]
[ SQL ] SHOW COLUMNS FROM `question` [ RunTime:0.000795s ]
[ SQL ] SELECT * FROM `question` WHERE `md5` = '7aeb806d59873777' AND `review_status` = 1 LIMIT 1 [ RunTime:0.000269s ]
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[ SQL ] SHOW COLUMNS FROM `user_info` [ RunTime:0.000762s ]
[ SQL ] SELECT * FROM `user_info` WHERE `user_id` = 3 [ RunTime:0.000693s ]
[ SQL ] SELECT * FROM `question_section` WHERE `id` = 0 [ RunTime:0.000142s ]
[ SQL ] SHOW COLUMNS FROM `question_picture` [ RunTime:0.000919s ]
[ SQL ] SELECT * FROM `question_picture` WHERE `question_id` = 1 [ RunTime:0.000199s ]
[ SQL ] SHOW COLUMNS FROM `question_supplement` [ RunTime:0.000784s ]
[ SQL ] SELECT * FROM `question_supplement` WHERE `question_id` = 1 [ RunTime:0.000174s ]
[ SQL ] SHOW COLUMNS FROM `question_answer` [ RunTime:0.000834s ]
[ SQL ] SELECT * FROM `question_answer` WHERE `question_id` = 1 AND `parent_id` = 0 ORDER BY `id` DESC [ RunTime:0.000294s ]
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[ SQL ] SELECT * FROM `user_info` WHERE `user_id` IN (3) [ RunTime:0.000800s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `question_answer` WHERE `question_id` = 1 LIMIT 1 [ RunTime:0.000202s ]
[ SQL ] SELECT * FROM `question` WHERE `is_show` = 1 AND `review_status` = 1 AND `id` IN (1,14) ORDER BY field(id,1,14) [ RunTime:0.000419s ]
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[ SQL ] SELECT count(id) num, user_id FROM `question` WHERE `created_time` BETWEEN '2024-04-01 00:00:00' AND '2024-04-30 00:00:00' GROUP BY `user_id` ORDER BY `num` DESC LIMIT 12 [ RunTime:0.000254s ]
[ SQL ] SHOW COLUMNS FROM `topic` [ RunTime:0.000836s ]
[ SQL ] SELECT `id`,`md5`,`title`,`created_time` FROM `topic` WHERE `review_status` = 1 ORDER BY `id` DESC LIMIT 4 [ RunTime:0.000219s ]
[ SQL ] SHOW COLUMNS FROM `topic_info_list` [ RunTime:0.000761s ]
[ SQL ] SELECT * FROM `topic_info_list` WHERE `topic_id` = 1 ORDER BY `id` DESC LIMIT 2 [ RunTime:0.000187s ]
[ SQL ] SHOW COLUMNS FROM `news` [ RunTime:0.000786s ]
[ SQL ] SELECT * FROM `news` WHERE `id` IN (864,849) [ RunTime:0.000248s ]
[ SQL ] SHOW COLUMNS FROM `question_module_list` [ RunTime:0.000716s ]
[ SQL ] SELECT * FROM `question_module_list` WHERE `module_type` = '02' AND `info_type` = '02' ORDER BY `sort` ASC,`id` DESC LIMIT 16 [ RunTime:0.000195s ]
[ SQL ] SHOW COLUMNS FROM `seo` [ RunTime:0.000722s ]
[ SQL ] SELECT * FROM `seo` WHERE `column_type` = '14' AND `page_type` = 'question' AND `info_id` = 1 LIMIT 1 [ RunTime:0.000178s ]
[ SQL ] SELECT * FROM `user` WHERE `id` = 3 LIMIT 1 [ RunTime:0.000357s ]
[ SQL ] SELECT * FROM `question_section` WHERE `id` = 0 LIMIT 1 [ RunTime:0.000171s ]
[ SQL ] SELECT * FROM `question_section` WHERE `id` = 0 LIMIT 1 [ RunTime:0.000128s ]

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