110results about How to "Efficient process flow" patented technology

The present disclosure relates to semiconductor devices and a process sequence in which a semiconductor alloy, such as silicon/germanium, may be formed in an early manufacturing stage, wherein other performance-increasing mechanisms, such as a recessed drain and source configuration, possibly in combination with high-k dielectrics and metal gates, may be incorporated in an efficient manner while still maintaining a high degree of compatibility with conventional process techniques.

In sophisticated semiconductor devices, high-k metal gate electrode structures may be provided in an early manufacturing stage wherein the threshold voltage adjustment for P-channel transistors may be accomplished on the basis of a threshold voltage adjusting semiconductor alloy, such as a silicon/germanium alloy, for long channel devices, while short channel devices may be masked during the selective epitaxial growth of the silicon/germanium alloy. In some illustrative embodiments, the threshold voltage adjustment may be accomplished without any halo implantation processes for the P-channel transistors, while the threshold voltage may be tuned by halo implantations for the N-channel transistors.

The invention discloses a method for the dressing, desilicication and desulfuration of sulfur-containing bauxite, which relates to a method for the dressing, desilicication and desulfuration of low-quality sulfur-containing bauxite and is characterized in that: a dressing process to mill the sulfur-containing bauxite, regulate the pH to 3 to 6 by using sulfuric acid, add an inhibitor, an activator, a silicate mineral collector and a sulfur-containing gangue collector in turn, stir, perform size mixing and perform flotation; and after flotation, the silicate minerals and sulfur-containing gangue in a major part of the sulfur-containing bauxite are enriched in foam as tailings, and the ore pulp obtained after flotation is used as concentrate. When the method disclosed by the invention is used, the synchronous dressing, desulfuration and desilicication of the sulfur-containing bauxite can be realized quickly. The method has the characteristics of short flow and simple process.

The invention relates to an energy-saving evaporating process and equipment for a L-phenylalanine brine solution, belonging to the technical field of efficient energy saving and environmental protection. The process comprises the following steps of: preheating a 1 percent concentration of feed solution to 50-60 DEG C with a preheater 4; making the preheated feed solution enter the tube pass and shell pass of a falling film evaporator 7 and a climbing film evaporator 8 for secondary vapor heat exchange at 78-80 DEG C, heating to 70 DEG C, and evaporating in a way of combining a falling film with a climbing film to generate secondary vapor and a concentrated solution; making the secondary vapor and the concentrated solution enter a separator 9 for vapor-liquid separation; making the separated secondary vapor enter a centrifugal compressor 10 for compressing and increasing caloric content, heating to 78-80 DEG C for serving as a heating source of the evaporators 7 and 8, and heating and evaporating the feed solution; discharging the concentrated solution of which the concentration is controlled at 3 percent from the separator 9, and returning the concentrated solution of which the concentration does not reach 3 percent to the climbing film evaporator 8 for continually evaporating and concentrating. The system has the advantages of self-heat balance, small using amount of live vapor, low running cost, high efficiency and saving in energy.

The invention discloses a polymeric nanofiber-based aerogel material and a preparation method thereof, and belongs to the fields of aerogel materials and preparation methods thereof. The preparation method comprises the steps that a thermoplastics polymer and cellulose acetate butyrate are subjected to melt blending, drawing, extracting and the like to prepare polymeric nanofibers, the polymeric nanofibers are added into water or a water solvent prepared from water and an organic solvent to generate polymeric nanofiber dispersion liquid, a cross-linking reaction is conducted to obtain cross-linked polymeric nanofiber suspension liquid, freeze drying is conducted on the cross-linked polymeric nanofiber suspension liquid, and then the polymeric nanofiber-based aerogel material is prepared. The polymeric nanofiber-based aerogel material prepared through the method has the advantages of being obvious in nanofiber porous structure, good in mechanical property and the like. The material prepared through the method can be applied to the fields of air filtration, thermal insulation, adsorption and the like directly or by being composited with other materials.

The invention provides a full-biodegradable dental floss pick handle and a preparation method thereof. The handle is prepared through extrusion and injection molding from the following materials: 60-90 parts of polyglycolic acid, 5-30 parts of a toughening agent, 0.1-5 parts of a nucleating agent, 0.1-2 parts of a lubricant, 0.1-1 part of a compatilizer, and 0.1-3 parts of an antibacterial agent,wherein the toughening agent is at least one of poly(butylene adipate-co-terephthalate), poly(butylene succinate), polycaprolactone, polyhydroxyalkanoate, polypropylene carbonate, an acrylate degradable polymer and a maleic anhydride grafted degradable polymer, the nucleating agent is at least one of a sorbitol nucleating agent, a rosin nucleating agent, an organic phosphate nucleating agent and an inorganic nucleating agent, and the compatilizer is at least one of a silane coupling agent, an aluminate substance and a titanate substance. The handle meets the use requirements of the dental floss pick and can be fully biodegraded.

By omitting a growth mask or by omitting lithographical patterning processes for forming growth masks, a significant reduction in process complexity may be obtained for the formation of different strained semiconductor materials in different transistor types. Moreover, the formation of individually positioned semiconductor materials in different transistors may be accomplished on the basis of a differential disposable spacer approach, thereby combining high efficiency with low process complexity even for highly advanced SOI transistor devices.

Superior contact elements may be formed in semiconductor devices in which sophisticated replacement gate approaches may be applied. To this end, a dielectric cap layer is provided prior to patterning the interlayer dielectric material so that any previously created cracks may be reliably sealed prior to the deposition of the contact material, while the removal of any excess portion thereof may be performed without an undue interaction with the electrode metal of the gate electrode structures. Consequently, a significantly reduced defect rate may be achieved.

A metal silicide in sophisticated semiconductor devices may be provided in a late manufacturing stage on the basis of contact openings, wherein the deposition of the contact material, such as tungsten, may be efficiently combined with the silicidation process. In this case, the thermally activated deposition process may initiate the formation of a metal silicide in highly doped semiconductor regions.

A process for synthesizing the asymmetrically substituted urea compounds features that the arylnitro compound and organic amine take part in selective redox and carbonylation reaction at 50-200 deg.C under the existance of CO and the catalysis of Se as catalyst and triethylamine as cocatalyst. Its advantages are cyclic use of catalyst, high output rate, and high selectivity.

The present invention discloses a method and system for processing semantic fragments. Some embodiments of the present invention provides a method for processing semantic fragments. The method comprises: obtaining a plurality of groups of semantic fragments, the plurality of groups of semantic fragments at least including a first group of semantic fragments generated from a first data processing flow and a second group of semantic fragments generated from a second data processing flow, the first data processing flow being different from the second data processing flow; and merging the first group of semantic fragment and the second group of semantic fragment based on semantic equivalence. A corresponding system is also disclosed.

By performing a planarization process, for instance based on a planarization layer, prior to forming a resist mask for selectively removing a portion of a stressed contact etch stop layer, the strain-inducing mechanism of a subsequently deposited further contact etch stop layer may be significantly improved.

The invention provides an anal fistula biological suppository and a preparation method thereof. The anal fistula biological suppository uses small intestine submucosa tissues of inbred line animals without cell and DNA (deoxyribonucleic acid) components as the raw material, completely reserves the extracellular matrix component and structure, and has a micropore structure. The preparation method of the anal fistula biological suppository comprises the following operation steps: determination of animal source, pretreatment and rough cleaning of small intestine tissues, virus inactivation, cell removal, DNA removal treatment, formation, packaging and sterilization. The anal fistula biological suppository prepared by the method uses an inbred line animal as an animal source, and thus, the hereditary features are pure, stable and uniform, thereby radically ensuring the stability and uniformity of different batches of products; and the anal fistula biological suppository has fewer animal source DNA residues, completely reserves the three-dimensional structure of natural ECM, and has the advantages of low immune source property and high infection resistance.

The invention discloses a method for treating sewage through adoption of QTCNP technology. According to the method, aerobic denitrification composite flora and aerobic dephosphorization composite flora are added to synchronously remove COD, NH3-N, TN, and TP in an aerobic environment, and the sludge reflux ratio, the mixed liquid reflux ratio, and indexes, such as the PH value, DO value, sludge concentration, and sludge age, of an aerobic bioreactor are controlled to achieve efficient biological carbon, nitrogen and phosphorus removal. The COD removal rate can reach no less than 95%, NH3-N removal rate can reach no less than 95%, TN removal rate can reach no less than 85%, and TP removal rate can reach no less than 90%. The method is non-anoxic or anaerobic, is saved in investment, simple and stable to operate, low in treatment cost, and less in sludge production amount. The method is suitable for treating various sewage containing COD, NH3-N, TN, and TP, and can be applied to standard treatment of various sewage.

In a strained SOI semiconductor layer, the stress relaxation which may typically occur during the patterning of trench isolation structures may be reduced by selecting an appropriate reduced target height of the active regions, thereby enabling the formation of transistor elements on the active region of reduced height, which may still include a significant amount of the initial strain component. The active regions of reduced height may be advantageously used for forming fully depleted field effect transistors.

The present invention discloses one kind of high transparency bright polyurethane fiber and its production process. The bright polyurethane fiber includes the components of polyether dihydric alcohol, normal butyl alcohol, mixed diamine, yellowing inhibitor, lubricant, UV absorber, antioxidant, monoamine, acid matter and dimethyl amide. The production process includes polymerization to obtain single molecular prepolymer, high molecular weight polymer and spinning liquid, spinning and post-treatment. The bright polyurethane fiber has high elasticity, high transparency, excellent dyeing performance, high antiageing performance, good appearance and stable performance, and may be used in high grade fabric and high grade clothing.

The invention relates to a method for preparing diesel from coal tar serving as a raw material, which mainly comprises the following steps of: successively carrying out filtration to remove impurities, stationary dehydration, secondary dehydration, effluent fraction and hydrofining on the coal tar so as to obtain diesel components; and then adding diesel additive components into the diesel components, and mixing the components so as to obtain the diesel, wherein the diesel additive components comprise hexadecane number improvers, low temperature flow improvers, flame accelerators and cosolvents. The method has the advantages of rich raw material sources, high process universality, simple operation, mild reaction conditions, low energy consumption, good separation effect and no environmental pollution; and meanwhile, the blending diesel produced by the method has the advantages of high hexadecane number, high combustion performance, proper viscosity, high safety performance, and the like, therefore, the method has good market application prospect.

The invention discloses a method for improving the hydration activity of waste glass powder. The method comprises the following steps: carrying out cleaning, airing, preliminary crushing and jaw crushing on waste glass having different colors and kinds, collected from salvage stations, and carrying out ball milling by a ball mill for 60-120 min to obtain the waste glass powder; carrying out dry screening, wet screening and a settlement process on the waste glass powder to obtain waste glass powder with the particle size range of 10-75 [mu]m and the particle specific surface area being greater than 400 m<2>/kg; and adding cement and a composite exciter to the waste glass powder, carrying out mixing milling treatment for 30 min, adding water, pouring the obtained mixture into a cement neat paste stirrer, and stirring the mixture for 2-3 min to obtain a composite gelling material. The composite gelling material prepared in the invention is a waste glass recycled product, waste glass has a high utilization rate, wide sources and easiness in obtaining, and the composite gelling material has the advantages of quickness in setting, quickness in hardening, high early stage strength, and great increase of the later strength.