This manuscript describes a new protocol for determination of Pa/Th/U in marine sediments. It is based on microwave-assisted digestion and represents an important reduction of working time over conventional hot-plate digestion methods, and the use of HClO(4) is avoided. Although Th and U are completely dissolved with a first microwave step, around 40% of (231)Pa remains undissolved, and a short...

M?c tiêu c?a nghiên c?u này nh?m xác ??nh các nhóm gen chính có m?c ?? bi?u hi?n khác bi?t (DEG) t?i m?u r? trong ?i?u ki?n stress h?n và m?n ? cây ??u gà (Cicer arietinum). B?ng cách khai thác b? d? li?u microarray liên quan ??n gà, t?ng c?ng 41 DEG (|fold-change| ? 15), bao g?m 15 t?ng c??ng m?nh (fold-change 15) 26 kìm hãm ? -15) ?ã ???c sàng l?c gà. D?a trên h? tham chi?u ph?n l?n chú gi?i ...

N o tre D am e is fo rg in g ah ead w ith p lans to develop a re ta il and res id en tia l d is­ t r ic t ju s t so u th of c a m p u s a n d h a s c o n f i r m e d ta lk s w ith a p re fe r re d dev e lo p er fo r th e p ro je c t , U n iv e rs ity officials said Tuesday. Greg H akanen , d irec to r of a sse t m an ag em en t and rea l e s t a t e d e v e lo p m e n t fo r N o tre D a m e , s...

Da ta n o n lin e a r ity in e x p lo r a to r y m u ltiv a r ia te a n a ly s is o f la n g u a g e c o r p o r a A b s tr a c t D a ta n o n lin e a rity h a s h is to ric a lly n o t b e e n a n d c u r re n tly is n o t a n is s u e in w o r k o n e x p lo r a to r y m u ltiv a ria te a n a ly s is o f la n g u a g e c o r p o ra. H o w e v e r, th e p r e s e n c e o f n o n lin e a r ity ...

N??c r? rác là n??c th?i t? bãi chôn l?p ch?a các thành ph?n ô nhi?m ? n?ng ?? cao. Do ?ó, vi?c x? lý c?n m?t h? th?ng ph?c t?p bao g?m quá trình hóa h?c, lý, sinh h?c và nâng N?ng cao c?a amoniac trong ng?n c?n s? phát tri?n vi v?t nên lo?i b? amoni xu?ng th?p h?n, t?o ?i?u ki?n thu?n l?i cho ti?p theo. Trong nghiên c?u này, tháp tách khí ?? t?ng h?p ?ã ???c thi?t k? th? nghi?m. ?nh h??ng pH, ...

The accuracy and validation of geo‐ thermochronological dating hinges on the availability well‐characterised age reference materials. Mesoproterozoic gabbroic anorthosite FC1 from Duluth Complex, Minnesota is a material for zircon U‐Pb suggested apatite fission‐track dating. We evaluate as (U‐Th)/He material, determine its U‐Pb, age. Our results constrain thermal history FC1, showing that fast ...

the wiener index $w(g)$ of a connected graph $g$‎ ‎is defined as $w(g)=sum_{u,vin v(g)}d_g(u,v)$‎ ‎where $d_g(u,v)$ is the distance between the vertices $u$ and $v$ of‎ ‎$g$‎. ‎for $ssubseteq v(g)$‎, ‎the {it steiner distance/} $d(s)$ of‎ ‎the vertices of $s$ is the minimum size of a connected subgraph of‎ ‎$g$ whose vertex set is $s$‎. ‎the {it $k$-th steiner wiener index/}‎ ‎$sw_k(g)$ of $g$ ...

W ith th e W eb , h y per text h as b ecom e the p ar ad igm atic r h eto rical s tr u ctu r e o f a g lo bal and d istr ibu ted ar ch iv e. Th is pap er ar g ues that th e s ch o lar ly ar ch iv e is g o ing tho u g h a p r ocess o f h y p ertextu alization that is n o t ad eq uately acco u n ted f o r in th eo r ies on h y per text. A m eth od o log ical ap p ro ach b ased o n G er ar d Gen e...

This study evaluates the accuracy of U/Th dates for young (6 a few thousand years old) reef corals, both living and fossil, and explores strategies for refining those dates. The high precision of the U/Th method (0 1^2%) for dating young corals is well-established. Earlier studies have demonstrated the method’s accuracy for select samples of known age. However, these studies have focused on typ...