Throughout the Himalayan thrust belt, klippen of questionable tectonostratigraphic affinity occur atop Lesser rocks. Integrated U-Pb ages, Hf isotopic, and whole rock trace element data establish that Askot klippe, in northwest India, is composed Paleoproterozoic lower rocks, not Greater as previously interpreted. The klippe consists 1857 ± 19 Ma granite-granodiorite gneiss, coeval 1878 felsic volcanic rock, circa 1800 Berinag quartzite, representing a small vestige (circa 1850 Ma)...

Abstract We integrate U–Pb zircon geochronology and ε Nd (0) values with field mapping to determine which tectonostratigraphic units are represented the north, south within Almora klippe in Kumaun, NW India. Rock north of Main Central thrust (MCT) have Neoproterozoic ( c. 900 Ma) detrital ages, coupled similar (−7.6 −11.8) values, suggesting that these two same unit, is southern continuation MCT or another Greater Himalayan system. However, klippe, age populations establish presence...

Abstract We evaluated variation in dissolved organic matter (DOM) export as a function of hydrology and land use from large arid river basin northwestern China. Two soil‐derived, humic‐like (C1 C2) three protein‐like fluorescence components (C3, C4, C5) were identified. During high discharges, water DOM had higher values DOC concentration, percent humic fluorescence, humification index, but lower index protein than found at base flow, suggesting that flow paths shifted to shallower depths...

Five copper complexes [(L1)2Cu(H2O)](ClO4)2 (1), [(L1)Cu(H2O)3](ClO4)2 (1a), [(L3)2Cu(H2O)](ClO4)2 (2), [(L5)2Cu(H2O)](ClO4)2 (3) and [(L6)2Cu](ClO4) (4) (where L1 = 1,10-phenanthroline, L3 1,10-phenanthroline-5,6-dione, L5 1,10-phenanthrolinefuroxan L6 2,9-dimethyl-1,10-phenanthrolinefuroxan), in situ prepared of 2,9-dimethyl-1,10-phenanthroline (L2) or 2,9-dimethyl-1,10-phenanthrolinedione (L4) were used for aerial oxidation primary alcohols to the corresponding aldehydes under ambient...

Abstract Existing structural models of the Himalayan fold-thrust belt in Kumaun, northwest India, are based on a tectono-stratigraphy that assigns different stratigraphy to Ramgarh, Berinag, Askot, and Munsiari thrusts treats as separate structures. We reassess new existing U-Pb zircon ages whole-rock Nd isotopic values, present model deformation history through kinematic analysis using balanced cross section. This study reveals rocks currently crop out thrust sheets were part same, once...

A new dicompartmental dioxime ligand (H2L) with m-xylyl spacer between the donor sites has been synthesised by Schiff-base condensation of α,α′-diamino-m-xylene and diacetyl monooxime. The reacts copper(II) salts giving rise to hexanuclear tricationic cage complexes [CuII6(μ3-O⋯H⋯O-μ3)L3(H2O)6]X3 (X = BF4, 1a; X ClO4, 1b). have characterised different analytical spectroscopic techniques confirmed structure even in solution. Single crystal X-ray diffraction studies both revealed a very...

The syntheses, molecular structures, and magnetic properties of a dicopper(II) complex, [Cu(2)(HL(1))(2)](ClO(4))(2) (1), its nickel(II) analog, [Ni(2)(HL(1))(2)](ClO(4))(2) (2), beta-amino ketoxime ligand (H(2)L(1) = 4,4,9,9-tetramethyl-5,8-diazadodecane-2,11-dione dioxime) are discussed. metal centers in out-of-plane oximate bridged dinuclear complexes (1 2) display distorted trigonal bipyramidal geometry form six-membered M(2)(NO)(2) ring oriented boat conformation. two copper(II) 1...

Research at Crystal River and Roberts Island Shell Mound Complex, on the western coast of Florida, USA, offers a quantitative assessment temporality shell deposit construction, Native subsistence practices, mobility patterns through stable oxygen isotope data from eastern oyster (C. virginica). The δ18Owater values oysters vary synchronously with salinity, assuming relatively constant δ18Owater/salinity gradients since time occupation, allowing for an examination shifts in habitat...

The mononuclear copper(II) complex [Cu(H2L1)2(H2O)](ClO4)2 (1) (where H2L1 = 1,10-phenanthroline-5,6-dioxime) reacts with perchlorate in acetonitrile at ambient conditions the presence of triethylamine to afford a complex, [Cu(L3)2(H2O)](ClO4)2 (2a), 1,10-phenanthroline furoxan. A similar [Cu(L3)2Cl](ClO4) (2) is isolated from reaction chloride, triethylamine, and sodium acetonitrile. two-electron oxidation vic-dioxime furoxan confirmed X-ray single crystal structure 2. An intermediate...

In this work, the heterostructure carbon supported tin/tin oxide (Sn/SnO2) photocatalysts has been developed. The target was prepared by precipitation method followed carbothermal reduction using tin tetrachloride (SnCl4) as precursor for SnO2, activated reducing agent, and ammonia solution precipitating agent. photocatalytic activity of as-prepared investigated degrading methylene blue (MB) dye. decomposition in under UV light irradiation revealed that Sn/SnO2 catalyst led to higher...

Abstract Coastal lake sediments are valuable paleoclimate archives provided that they can be accurately dated. Here, we report radiocarbon ages of bulk sediment organic matter (OM), plants, shells, particulate OM, and dissolved OM from coastal lakes in Florida. Bulk yielded consistently older than contemporaneous plants indicating significant deficiencies sedimentary these lakes. The data show the deficiency varies over time with location, making it impossible to determine a proper...

Abstract The synthesis and characterization of two pyrazolate‐bridged dicopper(II) complexes, [Cu 2 (L 1 ) (H O) ](ClO 4 ( , HL =3,5‐dipyridyl‐4‐(2‐keto‐pyridyl)pyrazole) =3,5‐dipyridyl‐4‐benzoylpyrazole), are discussed. These copper(II) complexes formed from the reactions between pyridine‐2‐aldehyde, 2‐acetylpyridine (for compound or acetophenone ), hydrazine hydrate with perchlorate under ambient conditions. single‐crystal X‐ray structure 1⋅ H O establishes formation a pyrazole ring three...

Pheochromocytoma and extra-adrenal paragangliomas increasingly coming into light nowadays because of improved imaging techniques biochemical investigations. There is sparse literature available regarding cytological findings adrenal paragangliomas.

The synthesis and characterization of a mononuclear nickel(II) complex [Ni(L2)](ClO4)2 (1) an analogous copper(II) [Cu(L2)](ClO4)2 (2) 15-membered azamacrocycle (L2 = 3-(2-pyridyl)-6,8,8,13,13,15-hexamethyl-1,2,4,5,9,12-hexaazacyclopentadeca-5,15-diene) are reported. macrocyclic ligand is formed during the reaction 4,4,9,9-tetramethyl-5,8-diazadodecane-2,11-dione dihydrazone (L1) with pyridine-2-aldehyde (PyCHO) templated by metal ions. X-ray crystal structure 1 exhibits distorted...

Testicular mixed germ cell tumor is common in the post-pubertal age, less so prepuberty. There are only 3 reports of prepubertal teratoma and yolk sac tumor. Two these cases had immature component were neonatal age group. The third case a toddler mature component.