摘要:
The disclosure relates to a cerebrospinal fluid (CSF) shunt for treatment of hydrocephalus, comprising a valve having an inlet port and an outlet port, which ports are for draining CSF, and a control port for regulating the drainage of CSF through the valve according to a hydrostatic pressure provided to the control port, which hydrostatic pressure is dependent on the body position of the patient. The disclosure further relates to a method for treatment of hydrocephalus comprising regulating drainage of CSF based on a hydrostatic pressure that is dependent on the body position of the patient.
摘要:
A method is described for using a postoperative CSF dynamical examination to determine the CSF dynamical state of the patient and the dynamical state of the CSF shunt in conjunction therewith.
摘要:
A method is described for using a postoperative CSF dynamical examination to determine the CSF dynamical state of the patient and the dynamical state of the CSF shunt in conjunction therewith.
摘要:
The present invention relates to a combustion engine, comprising an intake system having a throttle valve controlling an air flow to the combustion engine, a brake booster being in fluid communication with the intake system, downstream the throttle valve, via an evacuation duct for evacuation of air from the brake booster to the intake system, a crankcase being in fluid communication with the intake system, downstream the throttle valve, via a low load duct for conducting crankcase gases to the intake system, a venturi tube forming part of the low load duct, wherein the venturi tube comprises a narrow venturi tube portion forming a flow resistance within the low load duct through which the crankcase gases have to pass, wherein the evacuation duct is also fluidly connected to the venturi tube portion, via a connection duct, for further evacuation of air from the brake booster to the intake system.
摘要:
An improved system for simulating bipolar transistors with a variation in Early voltage as a function of collector/emitter bias voltage is disclosed. The simulation is based upon a standard Gummel-Poon model and is improved by an Early voltage extension, where the constant Early voltage is replaced by an Early voltage that is divided into several regions. The Early voltage is adjusted to fit the actual variations of the measured Early voltage characteristics of a bipolar transistor. The Early voltage within each region is used for calculating the bipolar transistors base charge which then is used to simulate the performance of the bipolar transistor. The regions may be linked together by choice of boundary conditions.
摘要:
The present invention relates to a combustion engine, comprising an intake system having a throttle valve controlling an air flow to the combustion engine, a brake booster being in fluid communication with the intake system, downstream the throttle valve, via an evacuation duct for evacuation of air from the brake booster to the intake system, a crankcase being in fluid communication with the intake system, downstream the throttle valve, via a low load duct for conducting crankcase gases to the intake system, a venturi tube forming part of the low load duct, wherein the venturi tube comprises a narrow venturi tube portion forming a flow resistance within the low load duct through which the crankcase gases have to pass, wherein the evacuation duct is also fluidly connected to the venturi tube portion, via a connection duct, for further evacuation of air from the brake booster to the intake system.
摘要:
Method of electrolytically continuously treating a material of stainless steel at a current density of 0.1-3 A/cm2, wherein the material is passed through one or more electrolytic cells arranged in series. The cells contain an electrolyte selected from sulphuric acid, a salt thereof, phosphoric acid and nitric acid, and the material is passed through the electrolyte between electrodes arranged in series under the influence of a direct current with alternating polarity. The electrodes are arranged alternately anodic and cathodic and every electrode on one side of said material is matched by an electrode of the same polarity on an opposite side of the material, whereby an oxide surface layer with a thickness of at least 1 micrometer is removed from the material to produce a surface conditioning effect.
摘要翻译:以0.1-3A / cm 2的电流密度电解连续处理不锈钢材料的方法,其中材料通过串联布置的一个或多个电解池。 电池含有选自硫酸,其盐,磷酸和硝酸的电解质,并且在交替极性的直流电的影响下,材料通过串联布置的电极之间通过电解质。 电极交替地布置为阳极和阴极,并且所述材料的一侧上的每个电极在材料的相对侧上由相同极性的电极匹配,由此将厚度至少为1微米的氧化物表面层从 该材料产生表面调理效果。
摘要:
The present invention relates to a method and a device for measuring the pressure p in an eye, the so-called intraocular pressure. The method includes a contact body with a known geometry being pressed against the eye with a gradually increasing contact force F and that when the area of deformation of the eye A can be determined, the pressure can be obtained from the relation P=F/A, whereby the frequency characteristic of a contact body associated with a sensor system oscillating in resonance is read, the contact body is pressed against the eye to form a new system oscillating in resonance, the contact force and frequency characteristic for the new system is read, and the change in frequency characteristic is calculated. In this way, the pressure of the eye can be determined since the sought deformation area A is a function of the change A(ƒich ar!). The device has a contact body (4) for pressing against the eye (1) and a means (3) of determining the force with which the contact body is pressed against the eye, whereby the contact body (4) is part of a system oscillating in resonance, and the resonance system is connected to a means (9) for reading the frequency characteristic of the system.
摘要:
The invention relates to a lock system for locking theft attractive property to fixed, preferably immovable objects (3), such as buildings, posts, etc., with the aid of an anchoring member (2) and a user-carried separate lock (6). The anchoring member (2) includes a first end (2a) which may be connected fixedly to the fixed object or the property. The anchoring member (2) also includes a second end (2b) which with the aid of the lock (6) may be locked either directly to a part of the property or to the fixed object subsequent to having passed an intermediate part (2c) of the anchoring member around a part of the property.