49results about How to "Improve safety and effectiveness" patented technology

The invention discloses a full-closed auxiliary frame for energy-saving building doors and windows, which comprises brackets and auxiliary frame boards. The auxiliary frame boards are connected to form a full-closed auxiliary frame through the brackets, a communication groove is arranged on the inner lateral side of the full-closed auxiliary frame, auxiliary frame mounting fasteners are fittingly arranged in the communication groove and fixedly connected with door-window mounting fasteners, and the door-window mounting fasteners are connected with building door-window section. The full-closed auxiliary frame for doors and windows is simple in structure and capable of fully closing mounting openings of building doors and windows, and has the advantages of heat insulation, environment protection, energy conservation, cost economization and convenience in mounting. Traditional door-window mounting process is changed, brand new building doors and windows with no pollution can be delivered to users, the problem of integration of wall heat insulation and full closing of door-window mounting openings of current buildings is thoroughly solved, and the problems of water permeation and construction linkage contradiction of door-window mounting and civil engineering openings are thoroughly solved. The problem of 'cold bridge' of energy-saving building doors and windows can be solved while mounting period of doors and windows can be shortened greatly, the full-closed auxiliary frame is fireproofing and flame-retardant, and safety effectiveness can be improved.

The invention relates to a medical bag which is intended for the infusion of a medicament by means of gravity. The inventive bag comprises: at least two compartments, namely a first compartment (1) containing a medicament in the form of a solution and a second compartment (2) containing a rinsing solution; and means for separating / communicating the compartments, which prevent the rinsing solution from automatically entering the medicament compartment except at the end of the infusion period. The rinsing solution ends the infusion, by rinsing the medicament bag and the infusion line, such as to prevent any risk of contamination or leakage of residual medicament from the bag or line.

The invention discloses a toad venom extract and a preparation method thereof. The preparation method comprises the following steps: (1) the toad venom medicinal material is added with absolute ethyl alcohol for reflux extraction; (2) the extracting solution obtained is condensed, separated by a silica gel column, and eluted by petroleum ether and acetone at the volume ratio of 3-10: 1 in an isocratic manner, the eluent is collected, filtered, and evaporated to be dry, thus obtaining the toad venom extract with three bufogenin mixtures. The preparation method of the invention has the advantages of being simple and convenient, being easy to operate, and being suitable for industrialized production; the content of the three bufogenin mixtures in the toad venom extract of the invention is not less than 90%.

The invention discloses a multi-functional central control system and a multi-functional central control method. The multi-functional central control system is assembled on a tank truck with a pump to control the opening and closing of the unloading pump and the emergency shut-off valve of the tank truck with the pump, and the flow meter information Intercommunication, realizing quantitative unloading, realizing gas leakage alarm function and closing the emergency shut-off valve and unloading pump in linkage, according to the button command of the control terminal or the button command of the remote controller, the unloading pump is turned on or off, and realized by the positioning tracking module Fixed-point unloading function, the anti-misstarting device is the interlock device of the solenoid valve, travel switch and control terminal. Once the operation box or liquid filling tank is opened, the central control terminal receives the signal of the travel switch and sends an instruction to open the solenoid valve. Unable to start. Improve the safety of transportation and driving, improve the safety of liquid unloading operations, and avoid safety accidents such as fires and explosions.

The present invention provides a SARS CoV-2 single-epitope T cell antigen peptide, a multipotent T cell epitope peptide prepared from the antigen peptide, and DC cells loaded with the multipotent T cell epitope peptide, which can be induced in vivo The T cell immunity of the MHC‑I pathway can rebuild the immune function of the body and stimulate the antiviral function of autologous CD8+CTL, which provides a more effective and safer means for the prevention and / or treatment of coronavirus infection-related diseases, and has broad clinical application Application and promotion prospects.