Provided is a semiconductor integrated device including a semiconductor memory circuit and a peripheral circuit of the semiconductor memory circuit. The peripheral circuit includes a first transistor having a first voltage as a breakdown voltage of a gate oxide film. The semiconductor memory circuit includes a pair of bit lines, one of the pair of bit lines being connected to a gate transistor of a memory cell, and a precharge circuit that includes a transistor having a breakdown voltage substantially equal to that of the first transistor, and precharges the pair of bit lines to a predetermined voltage in response to an activation signal. The activation signal of the precharge circuit is a second voltage higher than the first voltage.

Zusammenfassung  Eine neue Harztüpfelmethode mit Bathocuproindisulfonat zum spezifischen Nachweis von ng Kupfer(II) wird vorgeschlagen. Bei Anwendung eines Kügelchens weißer, weitmaschiger, stark basischer Anionenaustauscher, Diaion PA-Harze, beträgt die Erfassungsgrenze 10,4 ng Kupfer in 10l Probelösung (1:1 · 106).Micro analysis with the aid of ion exchanger resins. XXVISummary  A new resin spot test with bathocuproine disulfonate for the specific detection of ng amounts of copper(II) is described. Using 1 grain of white strongly basic popcorn-resin, Diaion PA 3-series, the identification limit for copper is 10.4 ng in 10l solution (1:1 · 106).

The effect of blue background light on behavioral response of H. halobium to step-like stimulation with green-orange attractant light was examined. A long-lifetime photointermediate of s-rhodopsin apparently is the photoreceptor for repellent light: the step-like increase in green-orange light was convertible from attractant stimulus to repellent one, when the cells were constantly illuminated with blue light. No difference of the threshold intensity of the blue background light was observed between the mutant strain that lacks both bacteriorhodopsin and halorhodopsin and the wild type strain, suggesting that the 2 light-driven ion pumps are not participant in sensing attractant light.

A bibenzo[d]imidazolidene compound inert to oxygen is provided. A 1,1′,3,3′-tetraphenyl-2,2′-bibenzo[d]imidazolidene compound is represented by general formula (1). In formula (1), R1 to R28 are each independently selected from a hydrogen atom and a substituent. The substituent is any of a halogen atom, an alkyl group containing 1 or more and 8 or less carbon atoms, and a substituted or unsubstituted aryl group. At least one of R1 to R28 is the substituent.