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49 results about "Residual risk" patented technology

The residual risk is the amount of risk or danger associated with an action or event remaining after natural or inherent risks have been reduced by risk controls. The general formula to calculate residual risk is residual risk=(inherent risk)-(impact of risk controls) where the general concept of risk is (threats × vulnerability) or, alternatively, (severity × probability). An example of residual risk is given by the use of automotive seat-belts.

Biodegradable blood vessel anastomosis ring/wheel and specialized surgical instrument thereof

PendingCN107088079AReduce crackingFit and EfficientSurgical staplesAv graftInsertion stent
The invention discloses a biodegradable vascular anastomotic device, a special surgical instrument and a method of use thereof, which are used for anastomosis between human blood vessels, between artificial blood vessels, or between human blood vessels and artificial blood vessels. The vascular anastomosis device consists of a The first anastomotic ring/wheel and the second anastomotic ring/wheel are coaxial with each other, and the anastomotic ring/wheel includes a blood vessel support stent, a clamping stent, and anastomotic needles distributed circumferentially at the free end of the vascular support stent. The anastomosis surface of the blood vessel anastomosis device of the present invention has a coaxial geometric structure, the anastomosis is efficient, the anastomosis area is large, the success rate of the operation is improved and the collapse of the anastomotic stoma is reduced. The present invention is made of biodegradable materials. Through reasonable structural design, the vascular anastomotic ring/wheel can be degraded by the human body after operation, and maintain a relatively complete structure during the degradation process. Maintain the corresponding effective support time to maintain the function of the vascular anastomosis ring/wheel, and avoid the risk of foreign body residue caused by traditional mechanical anastomosis methods. The special instrument provided by the invention integrates the functions of clamping and anastomosis, which simplifies the operation process and improves the operation efficiency.
Owner:SHANGHAI CHANGHAI HOSPITAL

Application of red mushroom extracts in preparing preparation for treating and/ or preventing liver injury related diseases caused by high fat diet

The invention relates to an application of an edible fungus extract in preparing a preparation for treating and/ or preventing liver injury related diseases caused by a high fat diet, in particular toan application of a red mushroom extract in preparing a preparation for treating and/ or preventing liver injury related diseases caused by a high fat diet. The preparation method is simple and feasible, and low in operation cost; and an extraction solvent in the preparation method can be recycled, the residual risk of an organic reagent is avoided, the natural quality of the red mushroom extractis ensured, and the red mushroom extract is environment-friendly, and the method belongs to a green manufacturing technology. According to the invention, the raw materials are completely extracted, the raw materials are fully utilized, and the utilization rate of the raw materials is high on the basis of ensuring the effect of the extract. The red mushroom extract shows obvious treatment and/ orprevention effects on liver injury related diseases, for example, the red mushroom extract can effectively relieve the deterioration of inflammation and improve various physiological and pathologicalindexes related to immunity, can be used in various fields such as medicines, health care products and the like, and has great economic and social values.
Owner:GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY +1

Use of russule extract in preparing preparation for treating and/or preventing intestinal flora disorder and related diseases

The invention relates to a use of an edible fungus extract in preparing a preparation for treating and/or preventing intestinal flora disorder and related diseases, in particular to a use of a russuleextract in preparing a preparation for treating and/or preventing the intestinal flora disorder and related diseases. The preparation method is simple and easy to implement and low in operation cost;and an extraction solvent in the preparation method can be recycled, so that the residual risk of an organic reagent is avoided, the natural quality of the ressule extract is ensured, the preparationmethod is environment-friendly, and the preparation method belongs to a green manufacturing technology. According to the invention, the raw materials are completely extracted, the raw materials are fully utilized, and the utilization rate of the raw materials is high. The russule extract not only can obviously contribute to the recovery of the dominant flora structure in a intestinal tract and the diversity of the flora, but also has obvious treatment and/or prevention effects on diseases related to the flora structure of the intestinal tract, can be used in various fields such as medicines,health care products and the like, and has great economic and social values.
Owner:GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY +1

Detection method of flumequine chiral enantiomer in seawater

The invention discloses a detection method of a flumequine chiral enantiomer in seawater. The method is characterized by comprising the following steps: taking 80-110mL of aquaculture seawater and adding in a beaker, adding 1mg-2mg of flumequine standard substance, performing ultrasonic treatment to completely dissolve the flumequine standard substance, taking 3-5mL of the obtained solution, treating by an HLB solid-phase extraction column, leaching by using 4-6mL of deionized water, and then eluting by using 5-10mL of methanol; nitrogen-blowing the eluent to nearly dry, redissolving by using ethanol, metering volume to 3mL, filtering by a millipore filter membrane with size of 0.22-0.45 micron to obtain a solution A; using n-hexane and ethanol in volume ratio of (10-40): (60-90) as a mobile phase, and adding methanoic acid with volume content of 0.1%-0.3% and ammonium acetate aqueous solution (5mmol/L) in the mobile phase to separate the flumequine chiral enantiomer; detecting the solution A by using high performance liquid chromatograph, wherein a CHIRALCEL OD-H chiral column is adopted, the column temperature is the room temperature, the flow velocity is 0.5mL/min to 0.7mL/min, and the wavelength is 254nm. By adopting the method disclosed by the invention, the flumequine chiral enantiomer can be successfully separated so that the residual quantity of the flumequine chiral enantiomer in the seawater can be detected, and basis is provided for the residual risk assessment and reasonable and safe use of flumequine in the seawater aquaculture.
Owner:ZHEJIANG OCEAN UNIV

Detecting method for trichlorfon enantiomers in culture pond bottom mud

InactiveCN104990998AResidue achievedResidues, successfully realized the resolution of chiral enantiomers of trichlorfonComponent separationWater bathsEnantiomer
A detecting method for trichlorfon enantiomers in culture pond bottom mud includes the steps that a bottom mud sample is placed into a centrifugal tube, anhydrous sodium sulfate is added to remove water, acetic acid is added to acidize acetonitrile, centrifuging is performed after ultrasonic extraction is performed, an upper layer extracting solution is taken into a flask, the extracting process is repeated 2-3 times, extracting solutions are mixed, the mixed solution is subjected to rotary evaporation and concentration in a water bath at 27 DEG C, a concentrated solution is added into CARB/NH2 cartridges activated in advance, the acetonitrile is used for flushing the flask, flushing liquid passes through the CARB/NH2 cartridges, outflow liquid is collected, and the CARB/NH2 cartridges are blown through nitrogen to be almost dry, hexyl hydride/isopropanol is used for performing redissolving and volume constancy on the liquid to 1 mL, and then the liquid passes through a microporous filtering film of 0.22 micrometer to obtain a solution A; with the hexyl hydride/isopropanol being a moving phase, separation is performed on the trichlorfon enantiomers; a high-performance liquid chromatograph is used for detecting the solution A, (as shown in specifications) IC chiral columns are selected for usage, the temperature of the columns is 25 DEG C, the flow rate is 1 mL/min, and the wavelength is 207 nm. The trichlorfon chiral enantimoers can be successfully separated, in this way, the residual quantity of the trichlorfon enantiomers in the bottom mud is detected, and bases are provided for residual risk estimation and reasonable and safe using of trichlorfon in bottom mud culture.
Owner:ZHEJIANG OCEAN UNIV
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