In old Tibet, the local government (including individual officials), monasteries and feudal lords all engaged in trade. Without exception, they also lent money at usurious rates. Interest-based profits were a major so...In old Tibet, the local government (including individual officials), monasteries and feudal lords all engaged in trade. Without exception, they also lent money at usurious rates. Interest-based profits were a major source of their incomes. To exploit serfs, the Dalai Lama and the Tibetan local government established special agencies to handle money-lending matters. The agency established by the Dalai Lama for the purpose was called展开更多
March 28 of this year is the second Tibetan Serfs Emancipation Day. People of all nationalities in Tibet marked the day by hoisting the national flag and by singing and dancing. Smiles were on every face and a festive...March 28 of this year is the second Tibetan Serfs Emancipation Day. People of all nationalities in Tibet marked the day by hoisting the national flag and by singing and dancing. Smiles were on every face and a festive atmosphere pervaded the snowcovered plateau region.展开更多
Fifty years ago, on March 28, 1959, Zhou Enlai, Premier of the State Council of the People＇s Repubfic of China, promulgated a decree of the State Council, declanng the Tibet local government controlled by Tibet＇s fe...Fifty years ago, on March 28, 1959, Zhou Enlai, Premier of the State Council of the People＇s Repubfic of China, promulgated a decree of the State Council, declanng the Tibet local government controlled by Tibet＇s feudal aristocrats and upperstratum clergy dissolved on that day and resolving that the powers of the Tibet local government be exercised by the Preparatory Committee for the Founding of the Tibet Autonomous Region from that day on. This decision of great historic significance sounded the death knell of the feudal serf system in old Tibet, a theocratic system that was reactionary, corrupt and dark. The change of government cleared obstacles and created conditions for development and progress in Tibet. After that a broad democratic reform movement swept the plateau region. Under the leadership of the Communist Party of China, the one million serfs in Tibet buried the feudal serf system and won their emancipation,展开更多
The alkali-atom density measurement method based on light absorption is highly suitable for a spin-exchange relaxationfree(SERF)atomic magnetometer because of its high-precision measurement and complete nonmagnetic in...The alkali-atom density measurement method based on light absorption is highly suitable for a spin-exchange relaxationfree(SERF)atomic magnetometer because of its high-precision measurement and complete nonmagnetic interference.In this study,the optical rotation angle detection system based on polarization balance detection is utilized to realize the alkali-atom density real-time measurement without affecting magnetic field measurement.We discovered that there exists an optimal frequency detuning of the probe light,which offers the highest sensitivity in alkali-atom density measurement and the lowest susceptibility to temperature fluctuations in terms of the scale factor.In contrast to conventional light absorption measurements based on pump light,this method demonstrated a threefold improvement in alkali-atom density measurement sensitivity while remaining immune to ambient magnetic fields and incident light intensity fluctuations.Furthermore,we utilized this method to achieve closed-loop temperature control with an accuracy of 0.04℃.展开更多
文摘In old Tibet, the local government (including individual officials), monasteries and feudal lords all engaged in trade. Without exception, they also lent money at usurious rates. Interest-based profits were a major source of their incomes. To exploit serfs, the Dalai Lama and the Tibetan local government established special agencies to handle money-lending matters. The agency established by the Dalai Lama for the purpose was called
文摘March 28 of this year is the second Tibetan Serfs Emancipation Day. People of all nationalities in Tibet marked the day by hoisting the national flag and by singing and dancing. Smiles were on every face and a festive atmosphere pervaded the snowcovered plateau region.
文摘Fifty years ago, on March 28, 1959, Zhou Enlai, Premier of the State Council of the People＇s Repubfic of China, promulgated a decree of the State Council, declanng the Tibet local government controlled by Tibet＇s feudal aristocrats and upperstratum clergy dissolved on that day and resolving that the powers of the Tibet local government be exercised by the Preparatory Committee for the Founding of the Tibet Autonomous Region from that day on. This decision of great historic significance sounded the death knell of the feudal serf system in old Tibet, a theocratic system that was reactionary, corrupt and dark. The change of government cleared obstacles and created conditions for development and progress in Tibet. After that a broad democratic reform movement swept the plateau region. Under the leadership of the Communist Party of China, the one million serfs in Tibet buried the feudal serf system and won their emancipation,
文摘The alkali-atom density measurement method based on light absorption is highly suitable for a spin-exchange relaxationfree(SERF)atomic magnetometer because of its high-precision measurement and complete nonmagnetic interference.In this study,the optical rotation angle detection system based on polarization balance detection is utilized to realize the alkali-atom density real-time measurement without affecting magnetic field measurement.We discovered that there exists an optimal frequency detuning of the probe light,which offers the highest sensitivity in alkali-atom density measurement and the lowest susceptibility to temperature fluctuations in terms of the scale factor.In contrast to conventional light absorption measurements based on pump light,this method demonstrated a threefold improvement in alkali-atom density measurement sensitivity while remaining immune to ambient magnetic fields and incident light intensity fluctuations.Furthermore,we utilized this method to achieve closed-loop temperature control with an accuracy of 0.04℃.
