Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: Disclosed herein is a process for preparing 5-(chloromethyl)furfural which includes the steps of: subjecting a cellulosic biomass to a pretreatment so as to obtain a pretreated cellulosic biomass, the pretreatment including a dilute acid treatment and a steam explosion treatment conducted after the dilute acid treatment; mixing the pretreated cellulosic biomass with hydrochloric acid so as to obtain a mixture; reacting the pretreated cellulosic biomass with the hydrochloric acid in the mixture so as to produce a reaction product containing 5-(chloromethyl) furfural; and extracting 5-(chloromethyl)furfural from the reaction product with an organic solvent.

Abstract: A bottle allowing connection in series includes a bottle body having a mouth, a receiving section connected to and extended into an open bottom of the bottle body, and a passively movable opening device mounted in an upper portion of the receiving section and forward movable by a force applied thereto. A first bottle body may be serially connected at the mouth to the receiving section at the bottom of a second bottle body. When the first bottle body is turned relative to the second bottle body, the opening device in the receiving section of the second bottle body is moved forward to open a sealed top of the receiving section, allowing liquid contents in the two bottle bodies to be conveniently mixed without the need of a third container.