Oroclines in the Central Asian Orogenic Belt

<正>The term ’orocline’ was first proposed by Carey [1] to describe the structure as ’an orogenic system which has been flexed in plane to a horse-shoe or elbow shape’;it usually emphasizes that a previous straight mountain belt or tectonic units have been bended horizontally.Nowadays the orocline has been used to describe any curved mountain belt regardless of its original shape [2].     

改进演示实验培养学生能力

实验法是获得和巩固化学教学,发展学生智力、培养能力,调动学生积极性的重要手段.而实验法中的演示法是教师对直观教具进行"表演和展示",学生依靠感观来获得知识的方法.然而,从目前我们全面培养学生能力来看,教材上的有些演示实验的教学效果并不令人满意,我经过多年的摸索认为有很多地方可以改进.     

Dynamic bandwidth allocation scheme for MCNS DOCSIS

ＤＯＣＳＩＳTX１ＩｎｔｒｏｄｕｃｔｉｏｎＩｎＪａｎｕａｒｙ１９９６,ｃａｂｌｅｃｏｍｐａｎｉｅｓａｎｄｍａｎｕｆａｃ－ｔｕｒｅｓｉｎＮｏｒｔｈＡｍｅｒｉｃａｅｓｔａｂｌｉｓｈｅｄＭＣＮＳ（Ｍｕｌｔｉｍｅ－ｄｉａＣａｂｌｅＮｅｔｗｏｒｋＳｙｓｔｅｍＰａ...     

Time and energy operators in quantum mechanics

ＴｉｍｅａｎｄＥｎｅｒｇｙＯｐｅｒａｔｏｒｓｉｎＱｕａｎｔｕｍＭｅｃｈａｎｉｃｓＬｉＣｈｕｎｆａｎｇＷａｎｇＱｉ（ＣｏｌｅｇｅｏｆＳｃｉｅｎｃｅｓ）ＡｂｓｔｒａｃｔＳｔａｒｔｉｎｇｆｒｏｍａｔｉｍｅｏｐｅｒａｔｏｒ,ｔｈｅｆｏｒｍｏｆｔｈｅｓｏ－ｃａ...     

Recent Advances in Pure-Organic Host–Guest Room-Temperature Phosphorescence Systems Toward Bioimaging

Organic room-temperature phosphorescence(RTP) materials have garnered considerable attention in the fields of biosensing, optoelectronic devices, and anticounterfeiting because of their substantial Stokes shifts, tunable emission wavelengths, and prolonged lifetimes. These materials off er remarkable advantages for biological imaging applications by eff ectively reducing environmental autofluorescence and enhancing imaging resolution. Recently, host–guest systems have been employed as efficient ...     

Diet high in branched-chain amino acid promotes PDAC development by USP1-mediated BCAT2 stabilizationOA

BCAT2-mediated branched-chain amino acid(BCAA) catabolism is critical for pancreatic ductal adenocarcinoma(PDAC) development,especially at an early stage.However,whether a high-BCAA diet promotes PDAC development in vivo,and the underlying mechanism of BCAT2 upregulation,remain undefined.Here,we find that a high-BCAA diet promotes pancreatic intraepithelial neoplasia(PanIN)progression in LSL-Kras^{G12 D/+}; Pdx1-Cre(KC) mice.Moreover,we screened with an available deubiquitylase library w...     

Magnesium isotope geochemistry of the carbonate-silicate system in subduction zonesOA

The lighter magnesium(Mg) isotopic signatures observed in intraplate basalts are commonly thought to result from deep carbonate recycling, provided that the sharp difference in Mg isotopic composition between surface carbonates and the normal mantle is preserved during plate subduction. However, deep subduction of carbonates and silicates could potentially fractionate Mg isotopes and change their chemical compositions. Subducting silicate rocks that experience metamorphic dehydration lose a smal...     

A K+-sensitive AND-gate dual-mode probe for simultaneous tumor imaging and malignancy identificationOA

Although molecular imaging probes have the potential to non-invasively diagnose a tumor,imaging probes that can detect a tumor and simultaneously identify tumor malignancy remain elusive.Here,we demonstrate a potassium ion(K+) sensitive dual-mode nanoprobe(KDMN) for non-invasive tumor imaging and malignancy identification,which operates via a cascaded ’AND’ logic gate controlled by inputs of magnetic resonance imaging(MRI) and fluorescence imaging(FI) signals.We encapsulate commercial K⁺