We investigate the sensitivity of phase estimation in a Mach-Zehnder interferometer with photon-subtracted two-mode squeezed vacuum states.Our results show that
It is widely accepted that helium (He) bubbles can prevent dislocations from moving and causing hardening and embrittlement of the material.However,He can affec
Treating the cosmological constant as a dynamical variable, we investigate the thermodynamics and weak cosmic cen-sorship conjecture (WCCC) of a charged AdS bla
本研究采用RAPD和ISSR两种DNA分子标记方法，以离体保存3年的‘金水’、‘金花’和离体保存5年的‘身不知’为试验材料，其中离体保存时间分别为26、30和34个月的‘金水’标记为A
设δ(S_α)为集中作用在S_α={||×||=α|α>0,x∈R~p}上的δ函数,其定义为: [δ(S_α),φ(x)]=∫_(S_α)φ(x)ds.函数(r-α)~(-m)(m=1,2,…)在R~P中非连续点的集合为S_α。
楼兰王是内蒙古河套地区新引进的优质甜瓜品种,该品种座果性好,产量高,果实甘甜爽口,明确其果实品质构成因素以及采后果实品质变化特点,对楼兰王在河套地区的推广具有重要意
番茄可溶性固形物(Brix,或Total soluble solids content简称TSS)对番茄品质有着重要的影响,其含量的高低直接影响番茄的甜度、酸度和风味;对于加工番茄,可溶性固形物含量每
从前有个秀才,既爱贪小便宜,又很迷信。一天,他想到朋友家去混吃混喝,临出门前,在桌子上写了个“吉”字,以祈求这次出门能顺利吃到白食。
Once upon a time, there was a sc
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Fluctuation phenomena commonly exist in arc plasmas,limiting the application of this technology.In this paper,we report an investigation of fluctuations of arc