汽车车身车间暖通设计

介绍了该车间的通风供暖方式,指出汽车厂焊接车间采用置换通风、转轮式热回收装置以及天然气燃烧加热的方式可以取得良好的室内空气环境和具有很好的节能效果。     

DSM—IV antisocial personality disorder field trial.

The development of the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 1994 ) included 12 field trials to assess proposed revisions. This article provides results from the antisocial personality disorder (APD) field trial that was conducted to obtain data of relevance to the proposals for simplification and for the inclusion of more traditional traits of psychopathy. Provided herein are the results from 4 sites that had sampled from populations of particular relevance to the diagnosis of APD (i.e., prison inmates, psychiatric inpatients, outpatients with substance use disorders, and homeless persons). The results indicated that some items from the 3rd revised Diagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 1987) could be deleted without affecting the diagnosis. The field trial provided mixed support for the proposal to include more traditional traits of psychopathy. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A coded data transceiver for the Star Local Area Network (StarLAN)

The system requirements of the physical layer of a star-connected local area network (StarLAN) are examined. The network forms a 1-Mb/s component of the IEEE 802.3 CSMA/CD (carrier-sense multiple-access with collision detection) system. The new standard allows CSMA/CD network protocols to be used over telephone twisted pairs for office or industrial digital communications. The use of this protocol means that existing local area network controllers and their higher level operations will be immediately compatible with StarLAN operation. The philosophy and functionality of the AM7961 StarLAN coded data transceiver is discussed in the context of the StarLAN environment and multipoint extension (MPE), a bus-oriented extension. MPE is a demanding requirement which needs special consideration in the collision detection system used by the chip. It is graphically shown why these requirements cannot easily be met by conventional techniques. The results on the test demonstrate that the overvoltage sensing system used in the chip overcomes the difficulties encountered     

Psychopathy and lateral preference.

Administered a self-report questionnaire to measure lateral preferences (hand, foot, eye, and ear) in 258 male prison inmates (mean age 29.8 yrs) divided into high, medium, and low psychopathy groups on the basis of a 22-item psychopathy checklist. As a group, Ss displayed much the same pattern of lateral preferences as did a normative group of 1,211 male noncriminals described by C. Porac and S. Coren (1981), with the exception that criminals were more likely to be right-side dominant than were noncriminals. The inmate groups did not differ from one another on any of the lateral preference measures, although there was a tendency for the incidence of consistent left-handedness to be higher in the medium than in the high or low psychopathy groups. Lateral preferences were unrelated to type or severity of criminal history or aggressive and violent behavior. Results conflict with models that attempt to use evidence of sinistrality as a basis for global inferences about cerebral dominance and dysfunction in delinquency, criminality, and psychopathy. (21 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Calculation and comparison of the surface ionization ϕ(0)

An analytical expression for the surface ionization ?(O) is derived from fundamentals, viz., the ionization cross section and the angular and energy distribution of backscattered electrons. In order to avoid numerical integrations, a simple formula for the energy distribution of backscattered electrons is presented. The values given by the resulting expression for ?(O) are compared with those given by already known formulae and with experimental findings. In general, the agreement is quite satisfactory, although the calculated values generally are smaller than those experimentally found, especially at high overvoltages. This can at least partly be explained by secondary fluorescence excited by the continuous radiation, of which the correction has not been taken into account in the experimental determination of the ?(O) values.     

Inclined slot-excited annular electron cyclotron resonance plasma source for hyperthermal neutral beam generation

An inclined slot-excited antenna (ISLAN) electron cyclotron resonance (ECR) plasma source is newly designed and constructed for higher flux hyperthermal neutral beam (HNB) generation. The developed ISLAN source is modified from vertical slot-excited antenna (VSLAN) source in two aspects: one is the use of inclined slots instead of vertical slots, and the other is a cusp magnetic field configuration rather than a toroidal configuration. Such modifications allow us to have more uniform arrangement of slots and magnets, then enabling plasma generation more uniform and thinner. Moreover, ECR plasma allows higher ionization rate, enabling plasma density higher even in submillitorr pressures, therefore decreasing the collision rate and∕or the reionization rate of the reflected atoms while passing through the plasma, and eventually getting higher flux of HNBs. In this paper, we report the design features and the plasma characteristics of the ISLAN source by doing plasma measurements and electromagnetic simulations. It was found that ISLAN source can be a high potential source for larger flux HNB generation; the source was found to give higher plasma densities and better uniformities than inductively coupled plasma source, particularly in low pressure ranges. Also, it is important that using ISLAN gives easier matching and better stability, i.e., ISLAN shows similar field patterns and good plasma symmetries irrespective of the variations of the mean diameter of the ring resonator and∕or the presence of a limiter or a reflector, and the operating pressures.     

Thickness dependent self limiting 1-D tin oxide nanowire arrays by nanosecond pulsed laser irradiation

Fast, sensitive and discriminating detection of hydrogen at room temperature is crucial for storage, transportation, and distribution of hydrogen as an energy source. One dimensional nanowires of SnO2 are potential candidates for improved H2 sensor performance. The single directional conducting continuous nanowires can decrease electrical noise, and their large active surface area could improve the response and recovery time of the sensor. In this work we discuss synthesis and characterization of nanowire arrays made using nanosecond ultraviolet wavelength (266 nm) laser interference processing of ultrathin SnO2 films on SiO2 substrates. The laser energy was chosen to be above the melting point of the films. The results show that the final nanowire formation is dominated by preferential evaporation as compared to thermocapillary flow. The nanowire height (and hence wire aspect ratio) increased with increasing initial film thickness h0 and with increasing laser energy density Eo. Furthermore, a self-limiting effect was observed where-in the wire formation ceased at a specific final remaining thickness of SnO2 that was almost independent of h0 for a given Eo. To understand these effects, finite element modeling of the nanoscale laser heating was performed. This showed that the temperature rise under laser heating was a strong non-monotonic function of film thickness. As a result, the preferential evaporation rate varies as wire formation occurs, eventually leading to a shut-off of evaporation at a characteristic thickness. This results in the stoppage of wire formation. This combination of nanosecond pulsed laser experiments and thermal modeling shows that several unique synthesis approaches can be utilized to control the nanowire characteristics.     

Reconfigurable Printed Liquids

Liquids lack the spatial order required for advanced functionality. Interfacial assemblies of colloids, however, can be used to shape liquids into complex, 3D objects, simultaneously forming 2D layers with novel magnetic, plasmonic, or structural properties. Fully exploiting all‐liquid systems that are structured by their interfaces would create a new class of biomimetic, reconfigurable, and responsive materials. Here, printed constructs of water in oil are presented. Both form and function are given to the system by the assembly and jamming of nanoparticle surfactants, formed from the interfacial interaction of nanoparticles and amphiphilic polymers that bear complementary functional groups. These yield dissipative constructs that exhibit a compartmentalized response to chemical cues. Potential applications include biphasic reaction vessels, liquid electronics, novel media for the encapsulation of cells and active matter, and dynamic constructs that both alter, and are altered by, their external environment.     

Pressure-modulated differential scanning calorimetry. An approach to the continuous, simultaneous determination of heat capacities and expansion coefficients

A new method is described that permits the continuous and synchronous determination of heat capacity and expansibility data. We refer to it as pressure-modulated differential scanning calorimetry (PMDSC), as it involves a standard DSC temperature scan and superimposes on it a pressure modulation of preselected format. The power of the method is demonstrated using salt solutions for which the most accurate heat capacity and expansibility data exist in the literature. As the PMDSC measurements could reproduce the parameters with high accuracy and precision, we applied the method also to an aqueous suspension of multilamellar DSPC vesicles for which no expansibility data had been reported previously for the transition region. Excellent agreement was obtained between data from PMDSC and values from independent direct differential scanning densimetry measurements. The basic theoretical background of the method when using sawtooth-like pressure ramps is given under Supporting Information, and a complete statistical thermodynamic derivation of the general equations is presented in the accompanying paper.