The aim of this study was to evaluate tea polyphenol and purine alkaloid contents pu-erh (Camellia assamica) in a fermentation solid system with Aspergillus niger fumigatu. In addition, the objective find major intermediate product during by HPLC-MS(n) analysis. results showed change catechin, ester-catechins gallic acid quantitative early stages, were lightly increased. Then, gradually degraded produce catechins acid. Furthermore, metabolic compound observed elucidated HPLC-DAD-MS(n) This...

The origin and petrogenesis of pegmatite-type lithium deposits within the Songpan-Garze Fold Belt (SGFB) western China remain subjects debate. To provide further insight on this subject, study investigated whole-rock trace elements Li isotopic compositions two-mica monzogranite (TMG) from Ke'eryin composite pluton, Jiada albite pegmatite (AP) albite-spodumene (ASP) their metasedimentary wall rocks ore field in eastern SGFB. Modeling muscovite-dehydration melting based (e.g., Li, Rb, Sr)...

Abstract This paper demonstrated the chemical analysis of single cell on a cross PDMS microfluidic chip in simple, fast, and high‐throughput mode. The pre‐stained cells were sequentially loaded into section by hydrodynamic force, lysed 0.2% SDS subsequently lysates detected LIF. Each can be within 500 ms due to its high concentration at resulted from absence electroosmosis after surface coating microchannel. reliability quality was confirmed glutathione rhodamine 123 K562 cells. In each run,...

The Shuikoushan ore field is one of the largest Pb-Zn-Au polymetallic magmatic hydrothermal system in South China and hosts a significant metallogenic potential. In this study, detailed garnet U-Pb dating, sulfide trace element sulfur isotopic analyses were conducted to reveal features during formation. Chronologically, U–Pb dating yields ore-forming ages 158.8 ± 1.4 Ma for Yagongtang deposit, 2.5 Kangjiawan deposit 154 18 Laoyachao respectively. formation history can be subdivided into four...

The Chalukou porphyry Mo deposit, located in the Great Hinggan Range, is largest deposit northeast China, although age and genesis of associated magmatic intrusions remain debated. Here we report zircon U–Pb ages trace elements, whole rock geochemistry Sr–Nd isotope data with a view to understand relationship between magmatism molybdenum mineralization. Zircon analysis yield an 475 Ma for rhyolite older strata, 168 pre-mineralization monzogranite, 154 syn-mineralization granite porphyry....

Previous studies on the Ke’eryin pegmatite-type lithium ore field in Songpan–Ganzi Orogenic Belt have explored characteristics of parent rock but not precisely determined its magma source area. This uncertainty limits our understanding regularity formation this region. In study, to address issue precise area mineralization, a detailed analysis Li isotope composition ore-forming (Ke’eryin two-mica monzogranite) and potential rocks (Triassic Xikang Group metamorphic rocks) was conducted. The...

Chuankou tungsten (W) ore field, with an estimated WO3 reserve exceeding 300,000 tonnes, is so far the largest Indosinian (Triassic) granite-related W field in South China. However, precise emplacement ages, sources of granitoids, and their relationship mineralization are still not well understood. In this research, four main magmatic stages (G-1 to G-4) have been identified including G-1 (phase I, biotite monzogranite), G-2 II, two-mica G-3 III, fine-grained granite), G-4 IV, granite...

We present systematic U–Pb age data collected by laser ablation multi-collector inductively coupled plasma mass spectrometry, precise geochemical data, and Nd isotope for igneous rocks from the southeastern Lesser Xing’an Range (SE LXR). The results indicate that formation ages as follows: Maojiatun alkaline granite, 207.2 ± 0.84 Ma 204.6 0.93 Ma; Diorite porphyrite, 164.5 0.97 Tieli syenogranite, 186.7 1.50 Ma. granite has high silicon, potassium, alkali, FeO T contents; it is enriched in...

During the Late Cretaceous period, massive magmatism occurred in South China. Eastern Hunan Province is situated inland part of Comparing with coastal area, China characterized by absence intermediate‐acid intrusive rocks, but occurrence multiple mafic rocks. To date, emplacement and triggering mechanism still very puzzling. In this article, we address question concentrating on basalt exposed eastern Province. Geochronologically, three stages zircon grains, which include xenocrysts...

摘要: 晶洞花岗岩成因类型和大地构造背景等方面的研究，目前颇具争议.先前的研究认为晶洞碱长、正长花岗岩属于A型花岗岩，形成于伸展环境，近年来的研究发现其成因类型具多样性.报道了博克图晶洞花岗岩的岩石学、岩石地球化学、年代学等方面的特征.SHRIMP锆石U-Pb定年结果为140.8±2.2 Ma，指示其属于早白垩世的产物.且其具有高SiO2，高ALK（Na2O+K2O）（7.99%~8.43%），K2O/Na2O=1.0~1.1，以及低的FeOT（1.15%~1.30%）.微量元素富Th、U、Cs、Rb，贫Ba、Sr、P、Ti，10 000*Ga/Al、总稀土含量以及Zr+Nb+Y+Ce值均低于A型花岗岩最低平均值，由此指示其应属于Ⅰ型花岗岩，Hf同位素特征显示其成分为新生地壳来源.动力学机制上，博克图晶洞花岗岩主要受制于早白垩世时期蒙古-鄂霍次克洋闭合作用.在东北地区岩石圈由增厚到减薄转换事件中，早期的新生地壳在地幔物质的底侵作用下发生低程度的部分熔融作用. 关键词: 晶洞花岗岩 / Ⅰ型花岗岩 SHRIMP U-Pb年龄 部分熔融 岩石学

South China is a well-known grand felsic igneous rocks province. However, it still controversial and not well understood whether the Mesozoic tectono-magmatic pattern dominated by subduction of paleo-Pacific oceanic plate. In this study, we address question concentrating on long-term evolutionary Guandimiao batholith, which has complex lithofacies with different formation ages can be superb record tectonic evolution in China. Geochronologically, four stages magmatism identified combined...

Taken Guangxi coastal region as a case study, set of early warning and evaluating indicator system that appropriated for resource environmentbearing capacity area was established. By applying the decoupling elastic model, relationship between urbanization level depletion index incorporated in evaluation process early-warning. The veto based on departmental red line control also added improvement approach. Finally, comprehensive model basis evaluation, specific integrated research results...