摘要:
A method of controlling the exhaust gas recirculation in an internal combustion engine. The operation is improved in the non-steady operating state of the engine by correcting the setpoint value of the exhaust gas recirculation rate for the non-steady operating state.
摘要:
The boost pressure in a turbocharged internal combustion engine is regulated by closed-loop control. A current performance graph value u(k), corresponding to a desired boost pressure, is determined from a speed/load-dependent performance graph. After that, the current performance graph value u(k) is compared with a previous performance graph value u(k-1). If the current performance graph value u(k) is greater than or equal to the previous performance graph value u(k-1), then the current performance graph value u(k) is transmitted as the process parameter x(k). Conversely, if the current performance graph value u(k) is less than the previous performance graph value u(k-1), then the current performance graph value u(k) is filtered by a PT.sub.2 member after an idle time elapses and is transmitted as the process parameter x(k).
摘要:
With a method for converting a fuel quantity (MF) into a torque (TQ) in an internal combustion engine, the efficiency (H) of the internal combustion engine is determined at the current operating point prior to the conversion as the ratio of actual torque (TQ) and actual fuel quantity (MF), and the required torque (MF) is determined from the efficiency (H) and the fuel quantity (MF).
摘要:
Disclosed is a method for analyzing nucleic acids in a sample comprising the following steps: (i) adding a DNA binding dye containing a benzothiazolium or benzoxazolium group to the sample to be analyzed, (ii) carrying out a polymerase chain reaction, (iii) applying the sample to a gel matrix, (iv) separating the nucleic acid molecules according to their size by applying a voltage and (v) excitation with light of a suitable wavelength for the optical visualization of the nucleic acid/DNA binding dye complexes.
摘要:
Biscationic organic compounds are disclosed which promote adsorption of nucleic acids from an aqueous solution to a solid phase such as silica. Adsorption takes place under low salt conditions. Further disclosed are methods and kits suitable for nucleic acid isolation from aqueous solutions.
摘要:
Disclosed are water-soluble ionic liquids suitable for promoting adsorption of nucleic acids to a solid phase. The use thereof, particularly methods for the isolation of nucleic acids from an aqueous solution, as well as kits for performing those methods are disclosed.
摘要:
In an adaptation method of an internal combustion engine for optimized combustion, the actually supplied cylinder-specific air masses are determined by determining the change in speed of the internal combustion engine within a thrust phase and by assigning these changes in speed to the cylinder-specific compression phases 20. This enables the fuel quantity to be injected to be more precisely adjusted to the cylinder-specific air mass available.
摘要:
The invention is related to the detection of a methylated cytosine in a nucleic acid wherein guanidinium hydrogen sulfite is used for the preparation of a solution containing guanidinium ions and sulfite ions and subsequent modification of the nucleic acid. Thereby, a non-methylated cytosine is converted to uracil. The invention further discloses kits for performing the methods of the invention.
摘要:
A particle filter is monitored with a sequence of steps. A pressure loss at the particle filter is measured. The volumetric flow of exhaust gas is acquired and a filter load value is calculated from the pressure loss and the volumetric flow of exhaust gas. The filter load value is recorded as a function of a drive parameter and the filter load value is differentiated with respect to the drive parameter. The differentiation of the filter load allows a particle filter breakdown to be deduced when the differentiation is less than or equal to zero.
摘要:
A roofing membrane, includes at least one support layer and a plurality of strips arranged in spaced-apart disposition at least on one side of the support layer and made of bituminous material and have a penetration depth between about 120 and 170 at a temperature of 50° C., and a softening point between about 100° C. and 110° C. The strips of bituminous material are separated from one another by a layer of scattered material and are covered by a fusible film. The film is composed of a plurality of strips which are oriented in parallel relationship to the bituminous strips but not interconnected.