Physical Sciences and Mathematics Commons^™

Infrared High-Resolution Spectroscopy Of Post-Agb Circumstellar Disks. I. Hr 4049: The Winnowing Flow Observed?, Kenneth H. Hinkle, Sean D. Brittain, David L. Lambert

Publications

High-resolution infrared spectroscopy in the 2.3-4.6 micron region is reported for the peculiar A supergiant, single-lined spectroscopic binary HR 4049. Lines from the CO fundamental and first overtone, OH fundamental, and several H2O vibration-rotation transitions have been observed in the near-infrared spectrum. The spectrum of HR 4049 appears principally in emission through the 3 and 4.6 micron region and in absorption in the 2 micron region. The 4.6 micron spectrum shows a rich 'forest' of emission lines. All the spectral lines observed in the 2.3-4.6 micron spectrum are shown to be circumbinary in origin. The presence of OH and H2O …

The John Muir Newsletter, Spring/Summer 2007, The John Muir Center For Environmental Studies

Muir Center Newsletters (1981-2015)

The John Muir University of the Pacific, Stocktoi, CA BER2/3 Sprint; Summer 2< John Muir's World Tour (part V) Lex Chalmers, University of Waikato, Hamilton, New Zealand Preface by W. R. Swagerty, Director, John Muir Center This past spring, I had the good fortune to travel to New Zealand and Australia through sponsorship of the J. William Fulbright Program of the U.S. State Department. At University of Waikato in Hamilton, New Zealand on the North Island, Dean Daniel Zirker introduced me to Professor Lex Chalmers, a distinguished geographer and researcher on his faculty. It turns out that Professor Chalmers had plans to travel to the United States on family business. After learning my interest in following John Muir's trail from his 1904 visit to New Zealand, Lex agreed to help with this project. In May, Chalmers visited us in Stockton and spent time in the John Muir Papers, clarifying the route and obtaining pertinent transcripts and details from the manuscripts. The document that resulted is his excellent work, not mine. I am indebted to Chalmers and the University of Waikato for the time spent helping the world better understand Muir's unpublished travels in New Zealand from the difficult-to-read notebooks that he kept while traveling abroad, and from Linnie Marsh Wolfe's transcriptions from the 1940s or 1950s. We are planning a more extensive academic publication from this preliminary work and share with you the fifth of six segments in the piece that follows. WRS John Muir's remarkable 'World Tour' began on May 29, 1903 with his departure from New York, and ended almost exactly a year later when he arrived back in San Francisco on May 27,1904. For most of this time Muir maintained a detailed daily journal, commenting on the botany, geomorphology and the patterns of human occupance that he encountered. These journals, closely written in pencil and often illustrated, are held in the Holt-Atherton Collection at the University of the Pacific in Stockton, Ca. The collection also holds some of Muir's correspondence written during his travels, and part of the Library collection he established. The journals have attracted scholarly attention, most notably in the transcription work undertaken by Linnie Marsh Wolfe to support her commentaries and 1946 biography of John Muir (Son of the Wilderness: The Life of John Muir). Wolfe's biography, not without its critics, place her at the forefront of commentators on John Muir's contribution to conservation, and her work was recognised by the award of the Pulitzer Prize for biography. Her typescript records of John Muir's journals are an important contribution and they provide the best research source for (Continued on page 6) page 1

Jews John Muir in the New World Proposed Film Documentary with Director Catherine Tatge PRESS RELEASE Source: Global Village Media/PRNewswire/USNewswire New York, July 18, 2007 The National Endowment for the Humanities (NEH) has awarded a grant of $80,000 to Global Village Media in support of their new documentary, "John Muir in the New World." The grant will be used during the scripting phase of the project. John Muir is one of the tall trees in environmentalism and western ecological thinking. He was one of the first conservationists …

China Environmental Study, Monty Mcgee

Independent Study Project (ISP) Collection

"Recently released figures showing crude oil imports soaring by nearly 40% in the first five months of the year as China needs more oil to fuel its explosive economic growth..." says one article from the BBC. According to the internationally renowned news agency "...stockpile coal has plunged to lowest levels in 20 years...” China is not alone in its battle with depleting natural resources. The entire international community has placed alternative energy research as a primary objective. Though the economic powerhouse has enjoyed an over 9% GDP growth rate for a better part of the last decade, environmental experts wonder …

Chemistry Division, A. Ben Wagner

Sci-Tech News

No abstract provided.

Late Pleistocene Climate Variability And Chemical Weathering In The Goriganga, Higher Central Himalaya, North India, Steven Paul Beukema

Dissertations

Relict lacustrine deposits in the Higher Central Himalaya, India, provide a rich repository of paleoclimate information for the period 16 ka to 11 ka. Stable isotope analysis of deposits near the village of Burfu shows the hydrologic balance between glacial meltwater and monsoon precipitation as source waters for the lake. During the period from 15.5 ka to 14 ka the Burfu lake was largely fed by melting glaciers. A warming event correlated to glacial Meltwater Pulse 1a indicates a sudden increase in carbonate weathering in the region accompanied by a gradual decrease in the ratio of glacial meltwater/monsoon precipitation feeding …

Lightweight Intrusion Detection: A Second Line Of Defense For Unguarded Wireless Sensor Networks, Vijay Subhash Bhuse

Dissertations

Wireless sensor networks (WSN) are formed of stationary nodes with stringent resources (in terms of battery power, processor speed, memory and radio range). They have specific communication and traffic patterns.

Making sensor networks secure is especially challenging because of the wireless medium and the fact that WSN is physically unguarded. The compromise of sensor nodes may lead to the loss of secret information and tampering of the software. Hence, intrusion detection techniques must be designed to detect at least some of the most dangerous attacks. Further, these techniques should be lightweight to suit resource constrained nature of WSN.

We focus …

On The Cover

Sci-Tech News

No abstract provided.

From The Editor, Susan Fingerman

Sci-Tech News

No abstract provided.

Beyond The Chemistry Web, Bob Buchanan

Sci-Tech News

No abstract provided.

Materials Research & Manufacturing Section, Betsy Aldridge

Sci-Tech News

No abstract provided.

Division Officers And Boards

Sci-Tech News

No abstract provided.

Sci-Tech Book News Reviews, Susan Fingerman

Sci-Tech News

No abstract provided.

Detection And Estimation Of A Mixture In Power Law Processes For A Repairable System, Ni Wang, Paul Kvam, Jye-Chyi Lu

Department of Math & Statistics Faculty Publications

The power law process has proved to be a useful tool in characterizing the failure process of repairable systems. This paper presents a procedure for detecting and estimating a mixture of reliable and unreliable (defective) systems. The test of a mixture, based on a simple likelihood ratio, is illustrated with truncated failure data for copy machines. Bootstrap methods are used to gauge the estimation uncertainty, and optimal decisions for system replacement are determined based on the observed likelihood.

Development Of Iho S-100: The New Iho Geospatial Standard For Hydrographic Data, Lee Alexander, Michael Brown, Barrie Greenslade, Anthony Pharaoh

Center for Coastal and Ocean Mapping

No abstract provided.

Multi-Algorithm Swath Consistency Detection For Multibeam Echosounder Data, Brian R. Calder

Center for Coastal and Ocean Mapping

It is unrealistic to expect that any single algorithm for pre-filtering Multibeam Echosounder data will be able to detect all of the “noise" in such data all of the time. This paper therefore presents a scheme for fusing the results of many pre-filtering sub-algorithms in order to form one, significantly more robust, meta-algorithm. This principle is illustrated on the problem of consistency detection in regions of sloping bathymetry. We show that the meta-algorithm is more robust, adapts dynamically to sub-algorithm performance, and is consistent with operator assessment of the data. The meta-algorithm is called the Multi-Algorithm Swath Consistency Detector.

Warm Hcn, C2h2, And Co In The Disk Of Gv Tau, E L. Gibb, K A. Vanbrunt, Sean D. Brittain, T W. Rettig

Publications

We present the first high-resolution, ground-based observations of HCN and C2H2 toward the T Tauri binary star system GV Tau. We detected strong absorption due to HCN nu3 and weak C2H2 [nu3 and nu2+(nu4+nu5)0+] absorption toward the primary (GV Tau S) but not the infrared companion. We also report CO column densities and rotational temperatures, and present abundances relative to CO of HCN/CO~0.6% and C2H/CO~1.2% and an upper limit for CH4/CO

Possible Identification Of A Metal-Rich Old Moving Group: High-Resolution Spectroscopy Of Candidate Members, Abigail R. Daane, Jeremy R. King, Simon C. Schuler

Publications

Using new high-resolution spectroscopic observations from both the McDonald Observatory 2.7 m and Kitt Peak National Observatory 4 m telescopes, we observed four candidate members of the Ursa Major moving group previously suggested to instead belong to a significantly older kinematic assemblage. The Fe abundances we measure strongly suggest that these stars are not UMa members but form a more metal-rich group of stars (+0.10 ≤ [Fe/H] ≤ +0.18) with an age near 3 Gyr. Our [Ca/H] determinations corroborate this result. The apparent similarities in metallicity and previously discovered UVW space motions lend credence to prior suggestions that these stars …

How Much Warhead Reliability Is Enough For A Comprehensive Nuclear Test Ban Treaty?, David W. Hafemeister

Physics

No abstract provided.

Photoproduction Of Events With Rapidity Gaps Between Jets At Hera, S. Chekanov, M. Derrick, S. Magill, S. Miglioranzi, B. Musgrave, D. Nicholass, J. Repond, R. Yoshida, Margarita C. K. Mattingly, N. Pavel, A. G. Yagües Molina, S. Antonelli, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, M. Bindi, D. Boscherini, A. Bruni, G. Bruni, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, G. Iacobucci, A. Margotti, R. Nania, A. Polini, L. Rinaldi, G. Sartorelli

Faculty Publications

The photoproduction of dijet events, where the two jets with the highest transverse energy are separated by a large gap in pseudorapidity, have been studied with the ZEUS detector using an integrated luminosity of 39 pb -1. Rapidity-gap events are defined in terms of the energy flow between the jets, such that the total summed transverse energy in this region is less than some value ETCUT. The data show a clear excess over the predictions of standard photoproduction models. This is interpreted as evidence for a strongly interacting exchange of a color-singlet object. Monte Carlo models which include such a …

Coupling Photodriven Multielectron Reduction Of Ruthenium Polypyridyl Complexes With Hydrogen Evolving Co-Catalysts, Cale Mcalister

Chemistry & Biochemistry Theses

With energy demands continuing to increase, the importance of finding a means of converting solar energy into a usable form of chemical energy continues to escalate. Photocatalysis provides a viable approach to harnessing energy from the sun for its use in energy converting reactions such as the water splitting reaction. Ruthenium polypyridyl complexes have played an important role in the growth and advancement of artificial photosynthetic systems, many of which have the ability to utilize solar energy in the process of H2 evolution. This thesis focuses on a biomimetic approach to solar H2 production through multi-electron photocatalysis. The two dinuclear …

Effect Of Structure And Stereochemistry On Cytotoxicity Of Ruthenium Polypyridyl Complexes, Arthi Krishnan

Chemistry & Biochemistry Theses

Efforts to develop novel non-platinum, metal-based antitumor drugs have been pursued by many groups and ruthenium complexes have drawn a lot of attention as prospective transition metal-based antineoplastic agents. Recently, it was discovered that complex [(phen)2Ru(tatpp)Ru(phen)2]+4 shows biological activity both in vitro and in vivo. Expanding on this area of research, in depth cytotoxicity studies in human lung cancer cells and healthy cells were carried out in five different ruthenium(II) polypyridyl complexes as racemic mixtures and also their enantiopure forms. This study was carried out by performing MTT-cytotoxicity assays on non small cell lung cancer cells (NSCLC), H358 - Human …

กิจกรรมสถาบันวิจัยสภาวะแวดล้อม

Thai Environment

No abstract provided.

ข่าวสิ่งแวดล้อม

Thai Environment

No abstract provided.

แนวคิดกับการมีส่วนร่วมของประชาชนที่มีต่อโครงการหรือกิจกรรมการพัฒนา, เสถียร รุจิวนิช

Thai Environment

No abstract provided.

ไม้เศรษฐกิจกับการพัฒนาสิ่งแวดล้อม ตอนที่ 1, สคาร จันทึก

Thai Environment

No abstract provided.

ปัญหาการกัดเซาะชายฝั่งทะเลและแนวทางการฟื้นฟูแนวชายฝั่ง, ปริทัศน์ เจริญสิทธิ์

Thai Environment

No abstract provided.

ต. เต่าทะเล สัตว์ทะเลใกล้สูญพันธ์, จำลอง อรุณเลิศอารีย์

Thai Environment

No abstract provided.

สลัดจ์อืดในระบบแอกทิเวเต็ดสลัดจ์เนื่องจากแบคทีเรียประเภทเส้นใย : ปัญหา สาเหตุ และแนวทางแก้ไข, โสภา ชินเวชกิจวานิชย์

Thai Environment

No abstract provided.

"ผลิตภัณฑ์ฉลากเขียวเพื่อชีวิต"...เพื่อสิ่งแวดล้อม, พงษ์วิภา หล่อสมบูรณ์

Thai Environment

No abstract provided.

แนะนําโครงการสถาบันวิจัยสภาวะแวดล้อม : ความก้าวหน้าการบริหารจัดการทรัพยากรในพื้นที่ลุ่มน้ำแบบบูรณาการอย่างยั่งยืน โดยใช้หลักการจัดการดิน น้ำและประชากร กรณีศึกษา : ลุ่มน้ำแข็งและลุ่มน้ำยัง, ทวีวงศ์ ศรีบุรี

Thai Environment

No abstract provided.