博碩士論文查詢聯邦系統首頁 聯絡信箱 關於我們 加入我們

caltechETD 檢索結果共 5156 筆,本頁資料從第 193 筆到第 204 筆

This work considers phonon entropy effects on phase stability of three binary alloys: Fe-Cr, FeAl, and Al-Ag. In all cases the vibrational entropy plays an interesting role. The phonon density of states was measured on body-centered cubic Fe0.50Cr0.50 prepared as a solid solution, and in increasingly un-mixed states induced by annealing the solid solution at 773 K. Moss....

By Tabitha Liana Swan-Wood--California Institute of Technology--2005-08-12
發佈到Facebook發佈到Plurk

This thesis develops and applies a method of tackling zero-sum additive questions, especially those related to the Erdös-Ginzburg-Ziv Theorem (EGZ), through the use of partitioning sequences into sets, i.e., set partitions. Much of the research can alternatively be found in the literature spread across nine separate articles, but is here collected into one cohesive w....

By David Joseph Grynkiewicz-Mathematics-California Institute of Technology-doctoral-2005-08-10
發佈到Facebook發佈到Plurk

Signal transmission is a combination of electrical and chemical processes. Upon binding neurotransmitters, ligand-gated ion channels open to allow ion flux, which converts chemical signals to electrical signals. In this thesis, experiments in conjunction with computations are utilized to study the mechanism of the ligand-binding process. The target receptor is a seroton....

By Tingwei Mu-Chemistry-California Institute of Technology-doctoral-2005-08-08
發佈到Facebook發佈到Plurk

The Ras/Erk MAPK pathway has been shown to be important in multiple developmental contexts. The development of T cells in the thymus is one such developmental system. Thymocytes undergo positive and negative selection, processes by which they are "chosen" for their ability to recognize MHC molecules loaded with peptide on the surface of cells, but only to react when the....

By Harry M. Green--California Institute of Technology--2005-08-04
發佈到Facebook發佈到Plurk

We study the properties of star-forming galaxies at redshift z~2, an era in which a substantial fraction of the stellar mass in the universe formed. Using 114 near-IR spectra of the H-alpha and [NII] emission lines and model spectral energy distributions fit to rest-frame UV through IR photometry, we examine the galaxies' star formation properties, dynamical masses and ....

By Dawn K. Erb--California Institute of Technology--2005-08-03
發佈到Facebook發佈到Plurk

In the last several years, significant progress has been made in modelling the Internet congestion control using theories from convex optimization and feedback control. In this dissertation, the equilibrium and dynamics of various congestion control schemes are rigorously studied using these mathematical frameworks. First, we study the dynamics of TCP/AQM systems. We de....

By Jiantao Wang--California Institute of Technology--2005-07-28
發佈到Facebook發佈到Plurk

This work focuses on the basic signal integrity issues of high-speed wireline links. It bridges the gap between optimum system design and circuit design for such links by: (1) understanding the effects of the system parameters on the bit error rate (BER), (2) introducing circuit architectures for the realization of systems that minimize the BER, and (3) demonstrating in....

By Behnam Analui-Electrical Engineering-California Institute of Technology-doctoral-2005-07-25
發佈到Facebook發佈到Plurk

The ability to quickly and accurately obtain sequence information from single molecules of DNA and RNA has far-reaching implications for our understanding of biology. In the work presented here, we have made several advances in the area of single-molecule DNA and RNA sequencing. Specifically, in attempting to increase the read length of DNA polymerase, we have assayed s....

By Christopher J. Lacenere-Biology-California Institute of Technology-doctoral-2005-07-22
發佈到Facebook發佈到Plurk

Advances in the synthesis and use of diazo compounds are first discussed. The development of non-carbonyl stabilized diazo equivalents has allowed for carbene reactivity to be localized at carbons not adjacent to carbonyls. Consequently, a new tandem sequence, the Bamford-Stevens/Claisen reaction, has been developed that incorporates selective Z-enol ether formation wit....

By Jeremy Allen May--California Institute of Technology--2005-07-22
發佈到Facebook發佈到Plurk

SCF ubiquitin ligases regulate the ubiquitin-dependent proteolysis of a myriad of substrate proteins, including p27, Cyclin E, and IkBa. To further gain insight into SCF regulation and function, we purified SCF from mammalian cells and found the Cop9 Signalosome associated with SCF. Interestingly, deletion of the CSN in S. pombe resulted in the hypermodification of Cul1....

By Gregory Allan Cope--California Institute of Technology--2005-07-20
發佈到Facebook發佈到Plurk

We studied the neuronal correlates of consciousness by characterizing the role of attention and awareness in three psychophysical experiments. First, we investigated the role of visual awareness in the formation of afterimages, phenomena believed to occur in the retina. Visibility of the afterimage-inducing stimuli was manipulated by a powerful dichoptic suppression tec....

By Naotsugu Tsuchiya--California Institute of Technology--2005-07-18
發佈到Facebook發佈到Plurk

A Cu2N2 diamond core structure supported by an [SNS]¯ ligand exhibits a fully reversible one-electron redox process between a reduced CuICuI, {(SNS)Cu}2, an....


By Seth Beebe Harkins-Chemistry-California Institute of Technology-doctoral-2005-06-27
發佈到Facebook發佈到Plurk


 

計畫贊助者: