作者: 樣式 時間: 2025-3-22 00:19
Microweighing in Vacuo with the Aid of Vibrations of a Thin Band,rations was measured by an arrangement similar to a capacitance microphone. By varying the frequency of excitation, the resonance curve could be traced. Without load the peak of the curve was found to be at 1100 Hz, whereas, with a load of 0.2 mg, the peak shifted to 1000 Hz.作者: RACE 時間: 2025-3-22 00:28 作者: Venules 時間: 2025-3-22 07:44
Determination of the Diffusion Coefficient of Vapors by Means of a Microbalance,er are weighed as a whole..Variations in apparent weight may occur due to variations in the room temperature and to electrical charges. Small variations in temperature of the evaporating liquid have a very strong influence, especially at higher evaporation rates..The diffusion coefficient of water vapor in air is determined at 323, 333, and 343 K.作者: META 時間: 2025-3-22 09:40 作者: 國家明智 時間: 2025-3-22 13:03 作者: CHARM 時間: 2025-3-22 17:11
Methods for the Elimination of Weighing Troubles Due to Convection in a Microbalance,hin suspension wires; shielding samples and balance beam with horizontally suspended foils attached to the suspension wire or to the balance tube; using heaters with a homogeneous temperature zone and a helium gas stream protecting the measuring system.作者: 亞麻制品 時間: 2025-3-22 22:47
UHV Microbalance and Quartz Oscillator at Low Temperatures,g quartz, agree to within 2%. In a separate experimental setup the measurements of the Rb atom beam intensities with a calibrated Pt-ionization foil and with the quartz oscillator at 81 K agree also to within 2%.作者: GUILT 時間: 2025-3-23 02:17 作者: 激勵 時間: 2025-3-23 07:28 作者: Etching 時間: 2025-3-23 12:40
Static Magnetic Susceptibility Measurements on Small Solid Samples,ce Techniques series. The striking part of the setup is a vacuum microbalance with a sensitivity of about 10. dyne. The aim of this contribution is to emphasize the need for such a balance. This is achieved by discussing measurements. In particular an analysis of the apparent susceptibilities of an 作者: inflate 時間: 2025-3-23 16:55 作者: ATP861 時間: 2025-3-23 21:53
Activation Energies of the Decomposition of Poly(methyl ,-phenylacrylate) from Static and Dynamic Tariant with extent of decomposition. In the case of poly(methyl .-phenylacrylate), which decomposes by random initiation and unzipping to monomer, this condition only applies with low-molecular-weight material. In polymers which contain long chains a termination step reduces E.. As the amount of ter作者: Temporal-Lobe 時間: 2025-3-23 23:58
Apparatus for the Accurate Measurements of Magnetic Susceptibility with the Help of a Vacuum Electral Gouy method is the most favorable..A simple apparatus consisting essentially of a slightly modified Cahn RH Electrobalance, a permanent magnet, and thermostatic devices, is described. This apparatus can operate under high vacuum or in controlled gas atmosphere from ?30 to 150 C with an accuracy a作者: indignant 時間: 2025-3-24 06:04 作者: MELON 時間: 2025-3-24 10:05 作者: 否決 時間: 2025-3-24 13:34
Determination of the Diffusion Coefficient of Vapors by Means of a Microbalance,ed by using a recording microbalance. The determination is performed by recording the loss of weight of a small bucket containing a liquid evaporating through a narrow vertical tube. The suspension wire is placed in the axis of the tube. In the case of very narrow tubes (? < 10. m), tube and contain作者: 澄清 時間: 2025-3-24 17:08 作者: 的是兄弟 時間: 2025-3-24 19:44
Microweighing in Vacuo with the Aid of Vibrations of a Thin Band,ation depends on both tension and mass distribution. Let us assume that the band is loaded by a thin layer of dust, formed by spraying or electrostatic precipitation. In this case, the natural frequency will be diminished. This is shown in Fig. 1, where the natural frequency of a plastic band with a作者: amplitude 時間: 2025-3-25 01:07
Some Uses of Wire-Suspended Microbalances, change in pressure or volume of the gas (volumetric method). The former method offers a number of advantages, particularly the directness of the measurement, over the latter. These are illustrated in the course of the present paper, which is concerned with the application of a microbalance of the G作者: 處理 時間: 2025-3-25 06:10
Oxidation in Flow-Reaction Systems,-microbalance reaction systems are used to study the several chemical and physical mechanisms involved. To illustrate the method, the oxidation of rhenium and molybdenum is presented. Rates of oxidation of 10. atoms of Re or Mo were observed at 1100 and 1400 C, respectively. Comparison was made to p作者: 專心 時間: 2025-3-25 08:33 作者: reject 時間: 2025-3-25 12:49 作者: BUMP 時間: 2025-3-25 18:41 作者: 無脊椎 時間: 2025-3-25 22:18
Comments on the Applications and Improvement of a UHV Microbalance,m and ultrahigh vacuum, and the determination of drop weights). The results of these studies provided useful information on the best precision and accuracy which can be achieved under different environmental conditions. Tests of reproducibility and linearity of response showed that accuracies of ±1 作者: TEM 時間: 2025-3-26 03:32
A Moving-Table Balance,icated. The present paper deals with the use of such a balance incorporating mechanical feedback. The results of measurements concerning the sensitivity (0.12 .g) and reproducibility of such a moving-table balance are discussed.作者: ALT 時間: 2025-3-26 04:24
Fluctuations of the Weight Indicated by a Microbalance in the Pressure Range Between 1 and 103 torrd pans, of which one was cooled to 77 K and the balance beam kept at room temperature. The amplitudes increased with increasing pressure and temperature difference between sample and beam. In a nitrogen atmosphere, the fluctuations began at 200 torr, and in an argon atmosphere at 140 torr, while in 作者: Expurgate 時間: 2025-3-26 11:52 作者: GULF 時間: 2025-3-26 15:14
Measurements of Magnetic Thin-Film Parameters by the Use of an Automatic Microbalance,rded data the main magnetic properties of the films, such as saturation magnetization, remanence, coercive force, and the induced anisotropy constant can be evaluated with high accuracy. Examples of hysteresis loops of various ferromagnetic films with thicknesses ranging between 200 and 2000 ? are given.作者: ingestion 時間: 2025-3-26 19:43 作者: 舞蹈編排 時間: 2025-3-26 22:00 作者: 實現(xiàn) 時間: 2025-3-27 04:38 作者: PARA 時間: 2025-3-27 05:36 作者: 不透明性 時間: 2025-3-27 11:56
A. Van den Boschd not approach the obsessive. There is no evidence to suggest that she herself was involved in such a relationship; the figure is absent from her juvenilia and is of limited importance in two of her published novels. It is also difficult to trace a straightforward development in her treatment of the作者: 知識分子 時間: 2025-3-27 15:02
Judith Bransky,I. Bransky,A. A. Hirschable, paramagnetic, and tough at 4K. Many common austenitic (γ-phase) stainless steels are, however, structurally metastable at 4K. They prefer the bcc (α-phase),and will undergo spontaneous martensite transformations under appropriate conditions. Metastable austenite also appears in other classes o作者: Badger 時間: 2025-3-27 21:00
G. G. Cameron,G. P. Kerrnd Sir Walter Elliot and his heir glitter with pretense. And . own Henry Tilney, Isabella, Mrs. Allen, and John Thorpe emanate inauthenticity as each, in their own fashion, acts in manipulative, hypocritical—and in a couple of cases—imbecilic ways. Their flimflammery provides comic relief; however, 作者: cavity 時間: 2025-3-27 23:48 作者: BRINK 時間: 2025-3-28 03:49
K. M. Dijkema,J. C. Stouthart His father, Albert, in later life a canon of Winchester, had been a mathematical scholar at Christ’s College, Cambridge, and a wrangler, before being ordained in 1887 at the age of 24 and spending the next eight years as a curate. His mother was the daughter of a clergyman, the Reverend T. W. Sideb作者: 字謎游戲 時間: 2025-3-28 09:00 作者: patriot 時間: 2025-3-28 11:56
Th. Gastons capability. However, for more than a decade, Australian thinking about nuclear weapons and strategy remained inchoate. Extended nuclear deterrence (END) as a concept in Australian strategic policy did not yet exist. Canberra was focused almost entirely on British defense policy, and any thinking作者: 乞討 時間: 2025-3-28 16:25
W. Kollen,A. W. Czandernae in the national political debate. When the Minister for Communications, Michael Duffy, announced plans in November 1986 which would lead to ten months of frantic commercial activity and the fundamental reshaping of the country’s television, radio, newspaper and magazine industries, there was a pos作者: guzzle 時間: 2025-3-28 20:40
W. Kuhn,E. Robens,G. Sandstede,G. Walter of structural change, found that the extent of structural change in the period 1950–75 varied widely between countries, with Australia exhibiting a relatively low level of change. We have performed similar calculations using data for nine ‘industrial’ sectors in a number of countries over the perio作者: 子女 時間: 2025-3-29 02:26 作者: Tracheotomy 時間: 2025-3-29 03:25 作者: 傷心 時間: 2025-3-29 08:53
E. Robens,G. Sandstede,G. Walter,G. Wurzbacherbody of theory and style of approach to research can exist in an intellectual vacuum in which concepts can be applied in an apolitical theoretical framework.. Too often, the practitioners of sociology assume the manifestations of society are, in themselves, a revelation of the essence, or substance,作者: 調(diào)整校對 時間: 2025-3-29 13:45
http://image.papertrans.cn/v/image/980222.jpg作者: chronicle 時間: 2025-3-29 19:05 作者: 極大的痛苦 時間: 2025-3-29 21:59
,A New Microbalance Technique for Kinetic Studies of Gas—Metal Reactions at High Temperatures,A microbalance can be used to measure reaction rates of resistance-heated specimens with reactive gases by weighing the accumulation of condensed reaction products on a collector surrounding the hot specimen. The method was used to measure the volatilization rate of tungsten in inert gas in the presence of small amounts of H.O and CO..作者: vitreous-humor 時間: 2025-3-30 03:37
A Moving-Table Balance,icated. The present paper deals with the use of such a balance incorporating mechanical feedback. The results of measurements concerning the sensitivity (0.12 .g) and reproducibility of such a moving-table balance are discussed.作者: 和平主義 時間: 2025-3-30 05:24 作者: Flat-Feet 時間: 2025-3-30 09:27 作者: 歌曲 時間: 2025-3-30 15:09 作者: refine 時間: 2025-3-30 17:39
Judith Bransky,I. Bransky,A. A. Hirschderstood, but which may affect structural performance or reliability in the high stress, high field regions of the large and powerful superconducting magnets now being developed. This paper briefly reviews the combined effects of magnetic fields and mechanical loading on this transformation, reports作者: flourish 時間: 2025-3-30 20:43
G. G. Cameron,G. P. Kerrninstructed in anagogical or psychoanalytic interpretation, the Thorpes themselves fail because they call attention to the artificiality of conventions by embodying them so exhaustively. An example from Leigh Hunt’s . helps explain this: in his critique of Erasmus Darwin’s poetry, Hunt revealed how 作者: 枕墊 時間: 2025-3-31 01:15 作者: 松馳 時間: 2025-3-31 08:44
K. M. Dijkema,J. C. Stouthartrked. Six years later, in 1895, he was presented by his college to the living of Toft and Caldecote near Cambridge and, thus encouraged, he proposed the following year. After a short engagement of ten weeks they were married in November 1896 at The Bourne.作者: 大洪水 時間: 2025-3-31 11:03
N. G. Dovaston,B. McEnaneyd began multicultural television (1980). While the ALP Opposition was critical of some aspects, it was fully committed to the general policies based on Galbally, promising only to sustain and improve them. Then began the third phase, which might be termed one of ‘disillusion and retreat’. This has l作者: Lumbar-Spine 時間: 2025-3-31 16:59
Th. Gasties and examines the prevailing attitude of policy-makers, and how that view was shaped by the geopolitical circumstances at the time. It argues that Australian thinking about nuclear weapons developed primarily through the framework of thinking about Canberra’s strategic ties to Britain, and the id作者: 放棄 時間: 2025-3-31 20:44
W. Kollen,A. W. Czandernas left almost undiscussed. Many journalists complained that they felt constrained in their reporting of the takeovers by the commercial interests of their employers as they shuffled their assets, while others fell back on the rationalisation that their role was to report events, not to provide comme作者: MOAT 時間: 2025-3-31 22:50
W. Kuhn,E. Robens,G. Sandstede,G. Walter sector’s output at the end of the period against that at the beginning. The standard deviation of these ratios has then been computed across sectors within each country.. These standard deviations are reported in Table 4.1. It would appear that, judging by the IAC’s criterion (variability in sector作者: 善于騙人 時間: 2025-4-1 05:04
H. Moret,E. Louwerix,E. Sattlerer. ?Positing that democratization requires a clearly defined counter-culture, based on the political economy of social, economic and political equality, the book draws out the potential in non-violent progressive social movements for a new political economy.作者: chapel 時間: 2025-4-1 06:26
J. A. Poulis,M. Verduin,J. P. de Mey,C. H. Massenechnology could result in a loss of employment substantially greater than that displaced as a direct outcome of introducing new technology. Rather than opposing technological change Australian unions have attempted to develop measures which seek to ameliorate its negative effects on employment, skil作者: 寒冷 時間: 2025-4-1 10:58 作者: 男學(xué)院 時間: 2025-4-1 16:37
Dynamic Vacuum in Microbalance Chambers,of tubulation and valves are considered. A working system is described to illustrate how the design considerations can be used to obtain the desired performance in a microbalance vacuum system. Finally, the ultimate pressure calculated for various gas loads is compared with the actual performance of
