Abstract: A heat exchanger is provided, including a first case, a second case, a substrate, an engaging structure, an evaporator, a condenser, a first tube, and a second tube. The first case includes a first plate structure and a first protruding structure. The first plate structure has a first inner surface. The first protruding structure protrudes from the first inner surface. The second case includes a second plate structure and a second protruding structure. The second plate structure has a second inner surface. The second protruding structure protrudes from the second inner surface. The substrate is engaged with the first inner surface, the first protruding structure, the second inner surface, and the second protruding structure via the engaging structure. The substrate is in contact with at least three different lateral surfaces of the engaging structure so that the substrate and the first case combine are bonded.

Abstract: A portable electronic device including a first body, a second body, a stand, and a hinge structure is provided. The stand has a first pivot part and a second pivot part opposite to the first pivot part, wherein the first pivot part is pivotally connected to the first body, and the second body is pivotally connected to the second pivot part. The hinge structure includes a first bracket secured to the second body, a second bracket secured to the second pivot part of the stand, a first movable base, a first shaft secured to the first bracket and pivoted to the first movable base, a second movable base, a second shaft secured to the first movable base and pivoted to the second movable base, and a sliding shaft fixed to the second movable base and slidably connected to the second bracket.

Abstract: An engineering analysis tool comprises a unified resource model-based (URM) objective and tool mapping capability for linking engineering analysis objectives to analysis tools. A Markov chain-based analysis plan generator (APTG) for reusing engineering analysis plans may be included in the engineering analysis tool. Further, the engineering analysis tool comprises a graphic symptom capturer (GSC) that auto-captures engineering perceived fault symptoms from engineering data analysis (EDA) tools.

Abstract: An engineering analysis tool comprises a unified resource model-based (URM) objective and tool mapping capability for linking engineering analysis objectives to analysis tools. A Markov chain-based analysis plan generator (APTG) for reusing engineering analysis plans may be included in the engineering analysis tool. Further, the engineering analysis tool comprises a graphic symptom capturer (GSC) that auto-captures engineering perceived fault symptoms from engineering data analysis (EDA) tools.

Abstract: The purpose of this invention is to describe a new process for the manufacture of choroethene (C.sub.2 H.sub.3 Cl). This new process involves the use or ethylene (C.sub.2 H.sub.4) as a feedstock. Highly chlorinated ethenes or methanes are used as chlorinating agents. The corresponding less chlorinated ethenes or methanes are recovered as co-products or recycled to the process to produce additional chloroethene. The distribution of the products may be adjusted so that chloroethene is the major product.

Abstract: The purpose of this invention is to describe a new process for the manufacture of monochloroethane and dichloroethanes which can be decomposed into ethylene (C.sub.2 H.sub.4) and chloroethene (C.sub.2 H.sub.3 Cl), respectively, and recovered as products. This new process uses ethane (C.sub.2 H.sub.6) and chlorinated ethenes or methanes as feedstocks. The distribution of the products may be adjusted so that either ethylene or chloroethene is the major product. The new process can also be used to produce propylene from propane, and butylene from butane.

Abstract: Chlorine-containing organic compounds are reacted with a sulfur-containing stream to produce hydrogen chloride, carbon disulfide, and/or hydrogen sulfide. Hydrogen chloride and carbon disulfide are recovered as products. Hydrogen sulfide is recovered as a product or converted into elemental sulfur for recycle using chlorine or oxygen-containing gas.

Abstract: A process for removing hydrogen sulfide and/or mercaptans from hydrogen sulfide and/or mercaptans-containing gases using aqueous iodine slurry and/or solution to recover elemental sulfur as one product and to generate hydriodic acid which is dehydrated, pressurized, and decomposed into iodine for recycling and into hydrogen for recovering as another product.