
Magnifying Surgical Loupes
We do a better job when we can clearly see the details of the task at hand. Unfortunately, when working with small objects we tend to bend over in unnatural positions for extended periods of time. This can result in eye strain and back pain that can have long-term, detrimental consequences to our overall health and well-being. Using surgical loupes quickly improves vision and corrects poor posture.
How to Choose the Right Product? Magnification in 2X, 3.5X, and 4 X Strengths - A 3.5x and 4X magnification surgical loupe reveals incredible detail but comes with a small field of view (30MM.) Your working distance has to be maintained more accurately, too. Choose a 4X loupe if you want to focus on a narrow work area and need to see the details that a higher magnification affords. A lower 2.5X magnification results in wider field of view (50MM) and lets you monitor a broader work area. Because of their greater depth of field, 2.5X surgical loupes allow more freedom of movement as they are less sensitive to changes in your working distance.
Working Distance - Working distance is the approximate distance between your eyes and the object you work on. To choose a pair of surgical loupes with the right working distance, imitate the circumstances of a surgical procedure and try measuring your working distance. Keep your back straight and be in a comfortable working position. People below 57 height usually need loupes with 340 mm working distance while taller persons need ones with 420 mm working distance in a sitting position.
Illumination - Vision can never be perfect without proper lighting. In case your work area is hard to light up, use our super bright LED light that attaches to our surgical loupes. There are two intensity levels and the power is adjustable at each level. You will find it hard to look into the illuminated area at maximum power setting. The battery can run for 7 hours continuously at the lower level or for 4 hours at the high level. The light weighs only 11 g and it illuminates a spot with a 70 mm diameter from 400 mm with 6000 K (pure white) color.
Item # | Description | Magnification | WorkingDistance |
RS-6690 | Clip-on surgical loupes (glasses not included),Double hinge, flip-up design | 2.5 x | 340 mm(260-420 mm) |
RS-6697 | Clip-on surgical loupes (glasses not included),Double hinge, flip-up design | 2.5 x | 420 mm(330-510 mm) |
RS-6691 | Wire frame without glassesSingle hinge, angle adjustment | 2.5 x | 340 mm(260-420 mm) |
RS-6687 | Wire frame without glassesSingle hinge, angle adjustment | 2.5 x | 420 mm(330-510 mm) |
RS-6688 | Wire frame with glassesDouble hinge, flip-up design | 3.5 x | 420 mm(365-475 mm) |
RS-6692 | Wire frame with glassesDouble hinge, flip-up design | 2.5 x | 340 mm(260-420 mm) |
RS-6693 | Wire frame with glassesDouble hinge, flip-up design | 2.5 x | 420 mm(330-510 mm) |
RS-6685 | Clip-on surgical loupes (glasses not included),Double hinge, flip-up design | 3.5 x | 340 mm(290-390 mm) |
RS-6686 | Clip-on surgical loupes (glasses not included),Double hinge, flip-up design | 3.5 x | 420 mm(365-475 mm) |
RS-6694 | Wire frame with glassesDouble hinge, flip-up design | 4.0 x | 340 mm(300-380 mm) |
RS-6698 | Wire frame with glassesDouble hinge, flip-up design | 4.0 x | 420 mm(380-460 mm) |
RS-6695 | LED light, mounts on loupesUniversal clip-on design for all loupes | - | - |
RS-6699 | LED light for 2.5 - 3.5X magnification loupes | - | - |
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如题,之前没做过药代,老师给了一个600+Da的五肽,想测下药代动参数,看文献推荐上述两种方法,但是不知道选哪种更好,lcms前处理会不会影响小肽。
就是蛋白质分子的小片断
是氨基酸形成的
有机的是有机化合物的简称,它指的是含碳化合物.
但是,有四大类常见物质一般不作为有机物处理:
1、碳的氧化物,如CO和CO2.
2、碳酸及其盐,如CaCO3.
3、金属碳化物,如CaC2.
4、拟卤素及其化合物,如(CN)2与KSCN.
水的化学式为H2O,它不含有碳元素,故不是有机物.
但若所描述的水不是化学意义的水,而是自然界存在的天然水,那么,水中会溶有一定量的有机物.
求助大家,小分子药物最新专利申请情况跟踪,之前听别人说可以在一个网站可以导出这个信息。
不知哪位大侠知道,告知一下,不胜感激!
一、首先你要明白肽是什么...........................肽是氨基酸通过酰胺键结合而成的东西.........
二、你要明白氨基酸是什么..........................氨基酸是构成蛋白质的基本单位,多种氨基酸结合为长肽链,几条长肽链再盘旋就形成了蛋白质......................
三、关于小分子肽、短肽、多肽、寡肽.......其实都是肽.......区别只是由多少个氨基酸构成而已............
所以,你的问题可以很粗暴地理解为“蛋白质对人体有没有副作用”.......
如果你营养足够的情况下,再补充这个,会导致营养过剩,从而加重身体代谢的负荷............类似就是这样子的了...........小分子肽,一般现在用于化妆品上比较多(一ye子.植物肽面膜就是这个).......小分子肽(可以简单理解为纳米胶原蛋白),这比蛋白质(也可以粗暴理解为胶原蛋白)更加容易吸收......而用在食品上,要视乎是何种小分子肽了.....大豆肽、花生肽、大米肽....不同的肽有不同的功效.......主要可以改善风味、改善吸收、增强胃肠道功能等等.......
2017年4月26日|Filedunder:制药工业,制药企业,孤儿药,新药研发,制药常识,文献综合|Postedby:路人丙
【新闻事件】:在日前正在举行的美国神经学年会上MitsubishiTanabe公布了其ALS药物Edaravone的一个三期临床试验结果。在标准疗法基础上加入Edaravone显著改善ALS患者综合功能指标ALSFRS-R(-5.0对-7.5),同时也改善运动、呼吸等局部功能。Edaravone已经在韩国日本批准用于ALS,去年10月申请在美国上市,今年6月之前有望批准。
【药源解析】:ALS全称叫“肌肉萎缩性侧面硬化病”,也称LouGehrig氏病,因为30年代美国纽约洋基棒球队著名选手LouGehrig死于这个病。2014年风行一时的冰桶挑战让更多人知道了ALS,但ALS新药发现依然缓慢。美国目前只有riluzole这一个上市药物,能增加~10%的一年生存机会。
ALS的发病机理未知,动物模型十分不可靠,所以这个病的新药开发很难。过去10年大约只有十几个药物进入临床,基本全军覆没。走的最远的是百建艾迪的dexpramipexole,2013年初在三期临床失败。Edaravone号称是游离基清除剂,但分子机理未知。Edaravone最早作为中风药物开发,后来扩展到ALS。第一个三期临床失败,今天公布的是症状较轻患者。这个临床是日本人群,Edaravone并没有在美国IND和开展临床试验,所以如果批准将是比较特殊的情况(和Marathon的DMD药物Emflaza情况类似)。
Edaravone的另一个特殊性质是其分子结构。这个化合物分子十分简单,分子量只有174,可以算作是超小分子药物。现在有几十个分子量小于200的FDA批准药物,这类药物因为官能团数目有限不大可能与任何靶点有较高结合能,所以通常靶点未知。靶点未知又没有可靠动物模型,这类药物发现就更加困难。当然动物模型预测性差不是超小分子药物才面临的难题,多数神经系统药物、甚至现在最火热的肿瘤免疫疗法也面临同样问题。
这种临床前缺乏可靠评价体系的药物可以算是有D无R,这要求厂家冒更大的临床风险。只有潜在回报较大如没有任何标准疗法的罕见病或真正颠覆性药物如免疫疗法才可以适当采用这个模式。这个模式扩大化对厂家的长期生存是个威胁,因为新药的未知因素已经很多、成功率已经很低。没有临床前适当去风险的机会主义不可持续。
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★更多深度解析访问《美中药源》~
https://www.yypharm.com/?p=10664

