Spatial and temporal variability of cadmium in Gulf Stream warm-core rings and associated waters

Seawater samples were collected and analyzed for cadmium during four cruises studying Gulf Stream warm-core rings and associated waters. Warm-core ring (WCR) 82-B was sampled in April (approximately two months after formation), in June (after seasonal stratification), and in August (during its interaction with the Gulf Stream). The September–October cruise studied closure and separation of a meander that formed ring 82-H. The depth of the cadmium maximum varied with the depth of the main thermocline; the maximum occurred at a potential temperature of 7.8 ± 0.5°C and sigma-theta 27.4 ± 0.05 in the Slope Water, Gulf Stream, and Sargasso Sea stations. As the upper 100 m of the ring progressed from vertically well-mixed in April to seasonally stratified in June, the mole-ratios of cadmium/nutrient removal in the mixed layer were similar to the calculated slopes of the linear regressions of cadmium with phosphate, nitrate and silicate calculated from spatial distributions. Lateral mixing processes near the boundaries of WCR 82-B markedly influenced the vertical cadmium distribution via intrusions of Shelf/Slope water containing elevated levels of cadmium. Comparison of ASV-labile and total dissolvable cadmium from the August WCR 82-B station indicated essentially 100% ASV-labile cadmium in the waters within and below the main thermocline but non-detectable (\u3c0.010 nmol kg−1) ASV-labile cadmium in the waters above the thermocline

THEORETICAL REACTION CROSS SECTIONS FOR ALPHA PARTICLES WITH AN OPTICAL MODEL

The transmission coefficients T/sub l/ and total reaction cross sections sigma /sub R/ for alpha particles from 0 to 46 Mev interacting with twenty target nuclei with atomic numbers from 10 to 92 are calculated with optical model program in which a previously determined complex nuclear potential is utilized. The dependence of the T/sub l/ values, and hence of sigma /sub R/, on the Woods- Saxon parameters is investigated as a function of projectile energy. The optical model reaction cross sections are compared with those derived from a square-well potential and a model which approximates the real optical model potential barrier by a parabola and makes use of the Hill-Wheeler penetration formula for a parahelic potential. (auth

Pengembangan Agrowisata Di Pulau Nusakambangan(agritoarism Dewlopment of Nusakambangan Isi.and)

Penelitian dalam rangka menyusun rencana induk pengembangan pariwisata telah Dilakukan di Pulau Nusakambangan. Salah satu program yang diusulkan dalam Rencana Induk PengembanganPariwisata Pulau Nusakambangan 2001-2005 adalah pengembangan agrowisata. Lokasi yang diperuntukkan menjadi kawasan agrowisata terletak di sekitar bekas Lapas ( Lembaga Pemasyarakatan) Karanganyar dengan luas area sekitar 100ha. Tulisani ni bertujuan untuk menginformasikan kelayakan investasi dalam pengembangan agrowisata di Karang anyar yang merupakan bagian dari pengembangan pariwisata Pulau Nusakambangan. Hasil analisis dengan menggunakan kriteria investasi terhadap Salak pondoh yang diambil sebagai contoh komoditas yang hendak dikembangkan diperoleh hasil : (1) NPV dengan discount factor ( dt) 30% sebesar 5.906.591,8 dan dengan df 26% sebesar 9.450.546,9 (;2 ) IRR : 36,6%; ( 3) Net B / C : 4,45;( 4) ROI = 345,3%; dan (5) BEP untuk produk 21.895,6 k g dan untuk hargaR p 1.112,219/kg. Berdasarkan hasil analisis tersebut disimpulkan salak pondoh termasuk komoditas yang layak investiasi untuk pengembangan agrowisata.D isarankan, k omoditas lain yang direkomendasikan untuk pengembangan agrowisata yang diminati oleh calon investor hendaknya dilakukan analisis seperti metode di atas untuk menilai kelayakani ivestasinya

Binomial level densities

It is shown that nuclear level densities in a finite space are described by a continuous binomial function, determined by the first three moments of the Hamiltonian, and the dimensionality of the underlying vector space. Experimental values for $^{55}$Mn, $^{56}$Fe, and $^{60}$Ni are very well reproduced by the binomial form, which turns out to be almost perfectly approximated by Bethe's formula with backshift. A proof is given that binomial densities reproduce the low moments of Hamiltonians of any rank: A strong form of the famous central limit result of Mon and French. Conditions under which the proof may be extended to the full spectrum are examined.Comment: 4 pages 2 figures Second version (previous not totally superseeded

Determination of Porphyrins in Bile Using High Performance Liquid Chromatography and Some Clinical Applications

Peer Reviewe

Deformation effects in the 28^{28}Si+12^{12}C and 28^{28}Si+28^{28}Si reaction Search

The possible occurence of highly deformed configurations is investigated in the $^{40}$Ca and $^{56}$Ni di-nuclear systems as formed in the $^{28}$Si+$^{12}$C,$^{28}$Si reactions by using the properties of emitted light charged particles. Inclusive as well as exclusive data of the heavy fragments and their associated light charged particles have been collected by using the {\sc ICARE} charged particle multidetector array. The data are analysed by Monte Carlo CASCADE statistical-model calculations using a consistent set of parameters with spin-dependent level densities. Significant deformation effects at high spin are observed as well as an unexpected large $^{8}$Be cluster emission of a binary nature.Comment: 3 pages latex, 2 eps figures, paper presented in "wokshop on physics with multidetector array (pmda2000)Calcutta, India (to be published at PRAMANA, journal of Physics, India

Influence of factors unrelated to environmental quality on occupant satisfaction in LEED and non-LEED certified buildings

Occupant satisfaction in office buildings has been correlated to the indoor environmental quality of workspaces, but can also be influenced by factors distinct from conventional IEQ parameters such as building features, personal characteristics, and work-related variables. A previous study by the authors analyzed occupant satisfaction in LEED and non-LEED certified buildings on a subset of the Center for the Built Environment survey database featuring 21,477 responses from 144 buildings (65 LEED-rated). The data suggested that, when evaluated comprehensively, there is not a practically significant influence of LEED certification on occupant satisfaction. The aim of this paper is to investigate the impact on users’ satisfaction in LEED and non-LEED certified buildings of factors unrelated to environmental quality, including consideration of office type, spatial layout, distance from window, building size, gender, age, type of work, time at workspace, and weekly working hours. The results show that such factors statistically significantly influence the difference in occupant satisfaction in LEED and non-LEED certified buildings, but the effect size of such variations is, for most, practically negligible. However, tendencies were found showing that LEED-rated buildings may be more effective in providing higher satisfaction in open spaces rather than in enclosed offices, in small rather than in large buildings, and to occupants having spent less than one year at their workspace rather than to users that have occupied their workplace for longer. The findings suggest that the positive value of LEED certification from the point of view of occupant satisfaction may tend to decrease with time