I/ AIAff

How hostile is the moon?One day man may learn to harness the resources of the moon in order to fashiona self-sustaining environment. But when he first journeys there, he willhave to do so in a simulated earth environment. Air, food, water, tempera-ture control-these and many other features of terrestrial life must beengineered into the mission. Problems such as this are part of Bellcomm'sdaily work for NASA. f Highly qualified men can assist in planning andevaluating systems for this ambitious, far-reaching project. Fields of interestinclude computing and programming, physics, mathematics, engineering,flight mechanics, aerodynamics and aeronautical engineering in general. fIt is not easy work, but it is rewarding for men capable of doing it. If youbelieve you are such a man, your resume would be welcomed by Mr. W. W.Braunwarth, Personnel Director, Bellcomm, Inc., Room 1115S, 1100 17th St.,N. W., Washington 6, D. C. Bellcomm, newest company of the Bell System,is an equal opportunity employer.

BELLCOMM, INC.A Bell Telephone System Company

44j,

State SponsoredNuclear Research

State governments are rapidlyexpanding their financial sponsor-ship of nuclear research and train-ing programs, thus moving into anarea traditionally supported by fed-eral or national agencies.Modern experimental facilities

create an atmosphere that attracts,and holds, the scientists and engi-neers needed to sustain academicexcellence. Such technical leader-ship also provides a firm base fornew industrial enterprise.

State of Kentucky Pledged$100,000 for AcceleratorAt the University of Kentucky at

Van de Graaff 5.5-million-voltModel CN particle accelerator waspurchased after the Governor ofKentucky pledged $100,000 fromhis capital building fund and theKentucky Research Foundationmade $75,000 available. The bal-ance of the expenditure came fromother resources available to theuniversity.

nle unilversity OT KenItUCKY vanl aeGraaff will be housed in a specialcylindrical structure -part of the uni-versity's impressive new Chemistry-Physics building.

New 5.5-million-volt Model CN par-ticle accelerator was purchased by theUniversity of Kentucky with the helpof state agencies.

Most Widely UsedAccelerator Type

The 5.5-MeV Van de Graaff nowis the university's and the state'slargest and most powerful physicsresearch tool. It can produceintense monoenergetic beams ofboth electrons and positive ions,as well as neutrons and x-rays ina continuous beam or in bursts asshort as four nanoseconds.At first, the accelerator will be

used by the university to acceler-ate protons, deuterons, or Alphaparticles. With pulsed beam, thephysics department will carry outfime-of-flight measurements andstudy neutron-induced reactions.

Facility Expected To AttractMore Research Grants

While the Van de Graaff will beused mainly for investigation ofnuclear structure physics, it willalso be at the disposal of all theuniversity's departments engaged

in scientific studies underresearch grants or contracts fromfederal and industrial agencies.It will be operated by the facultyand graduate students on an esti-mated yearly budget of $150,000when at full capacity.

New Product LineAvailable from ARCOHigh Voltage Engineering's ARCO

Division, Walnut Creek, Calif., hasintroduced a new line of productsdesigned for use in the highvacuum, microwave, and particleaccelerator industries.The products, which are being

offered as standard items, havebeen developed and tested byARCO during the past ten years,and are a direct result of extensiveeffort associated with advancedhigh power accelerators. Includedin this group are:

* 11/2" all-metal straight-throughor right-angle high vacuumvalves

* An oil diffusion pump system forhigh vacuums rated at 40 liters/sec. The package inclUdes aroughing pump, traps, valves,and electrical control.(Base vacuum rating 10-8 Torr.)

* X-ray and neutron producingtungsten and uranium-clad tar-gets for use with 5-150 MeV highpower electron beams

* Pulsed 200 kV electron guns* 10-100 MeV electron beamanalyzing and deflecting sys-tems for use with high poweracceleratorsFor further information, write

Manager, Special Products, ARCODivision, High Voltage EngineeringCorporation, Walnut Creek, Calif.

SCIENCE, VOL. 1421128

SAVES 1TIME :

is often enough for a completeseparation by Thin Layer Chromatography.

And, the horizons of the technique continue to expand.New accessories and new adsorbents are being added reg-ularly to the DESAGA/BRINKMANN Apparatus. Do youknow about our stainless-steel applicator for silver nitrateslurries? Our stainless-steel mounting board? Our newpreparative dosing system? Our new labeling template forantioxidants? Our new inexpensive assembly for schools?Do you know about Silica Gel H which is fast becomingTHE standard adsorbent, and is better for everyone?

If you have any doubts about being on our mailing list,just drop us a card. We'll be glad to send you up-to-dateinformation.

CANTIAGUE ROAD, WESTBURY, N.Y. 11590ST. LOUIS * CHICAGO * HOUSTON * CLEVELAND * PHILADELPHIA * SAN FRANCISCO

ISNESTRNUMVENTSSCIENCE, VOL. 1421130

often accompanied by the generationof particle streams that escape fromthe sun and produce terrestrial effects.The international coordination of alltypes of observation is crucial for ob-taining a complete temporal picture ofsuch a complex event, and it is thetime relationships that often providethe key to understanding the mecha-nisms involved. Direct solar investiga-

tions are supplemented by countlessvarieties of terrestrial observations ofionospheric, cosmic-ray, auroral, andgeomagnetic disturbances-observa-tions that permit extrapolation back-ward in time to fill in details of thecausative solar event, such as the totalenergy of the radiation and particleemissions and their spectral charac-teristics.

The IQSY Disciplines

Meteorology. The IQSY programplaces great emphasis on investigationof the atmosphere above pressures of100 millibars (about 20 km)-that is,the region not accessible to mostconventional meteorological techniques.With increased knowledge of this re-gion, a three-dimensional picture of the

Fig. 2. The Alouette topside-sounding technique. Also illustrated, for comparison, are ground-based sounding (left) and rocketsounding (right) techniques. [Defence Radio Telecommunications Establishment, Canada]

1138 SCIENCE, VOL. 142

PERKIN-ELMER GAS CHROMATOGRAPHS THE BROADEST SELECTION-WITH THE MOST ADVANCED FEATURES-OFFERED BY ANY MANUFACTURER

PERKIN-ELMER GAS CHROMATOGRAPHSDESIGNED AND BUILT-SOLD AND SERVICED-BY THE WORLD'S LARGEST PRODUCERS OF GAS CHROMATOGRAPHIC EQUIPMENT

MODEL

220 BASIC UNIT $4500

MODEL

800SERIES BASIC UNIT $3195

800 DIFFERENTIAL FLAME. The basicinstrument in this series featuresthe Dynathermal oven design with fullyproportional temperature control andPerkin-Elmer s exclusive DifferentialFlame Ionization Detector. For dual orsingle column, packed or capillaryoperation, precise linear temperatureprogramming, sample collection-the ultimate in versatility.800 DIFFERENTIAL FLAME/HOTWIRE. The Hot Wire Detector in thiscombination is installed in a separatetemperature-controlled oven, andmay be used independently of, or inparallel with, the basic DifferentialFlame Ionization Detector.800 DIFFERENTIAL FLAME/ELECTRONCAPTURE. In this version, both the basicDifferential Flame Ionization Detectorand the Electron Capture Detector-in itsseparate thermostatted oven-aremounted at the same time. Pulserpower supply is optional.800 DIFFERENTIAL FLAME/MICROCROSS-SECTION. The newestPerkin-Elmer detector system, the MicroCross-Section Detector, is mountedin a separate thermostatted oven, inaddition to the Differential FlameDetector. It may be interchanged witheither the Hot Wire or the ElectronCapture Detector described above.

I

UMODEL

001SERIES BASIC UNIT $3195

8 D i T F E D

801 DIFFERENTIAL FLAME. Designedto meet the needs of nmedical,bionmedical and pesticide residueapplications, this instrument retains allthe control advantages of theModel 800, but features an all-glasssystenm, including ''on column''injection in either of the dual columns.A maior breakthrough is the newal l-glass removable in'jection block,which permits the analysis of ''dirty''samples: i.e., anaesthesia gases in blood,pesticide residue extracts.801 DIFFERENTIAL FLAME/HOTWIRE. As with the standard Model 800,the Model 801 can be equipped withan accessory Hot Wire Detectorinstalled in a separate temperature-controlled oven, to permit dual-column thermal conductivity operation.801 DIFFERENTIAL FLAME/ELECTRONCAPTURE. Particularly useful 'orpesticide residue analysis and silylether derivatives of steroids. TheElectron Capture Detector can beinstalled at the same time as the dualFlame Ionization Detector.Again, pulser power supply is optional.801 DIFFERENTIAL FLAME/MICROCROSS-SECTION. Also availablewith this version is our newest detectorsystem, the Micro Cross-SectionDetector, mounted in a separatethermostatted oven.

U

MODEL

010SERIES BASIC UNIT $1695

810 DIFFERENTIAL FLAME. This new

series, of nmodular design, offers-for the first time-dual columnoperation, with the high-sensitivityDifferential Flame Ionization Detector,at an extrenmely low price. Included in thebasic instrument, in addition to theFlame Detector, are the "ballistic''temperature programmer, andseparate temperature control for thedual in'jection blocks, with the provenDynathermal oven concept.810 DIFFERENTIAL FLAME/HOTWIRE. The Hot Wire Detector in thiscombination is installed in a

separate temperature-controlled oven,and may be used independentlyof, or in parallel with, the DifferentialFlame Ionization Detector.810 DIFFERENTIAL FLAME/ELECTRONCAPTURE. In this version, both theadditional Electron Capture Detector-in its separate thermostatted oven-and the Differential Flame Detector ofthe basic instrument are mountedat the same time. A pulser powersupply is optional.810 DIFFERENTIAL FLAME/MICROCROSS-SECTION. The MicroCross-Section Detector is mounted in a

separate modular thermostattedoven, and is installed at the same timeas the Differential Flame IonizationDetector which is basic to the instrument.It may be readily interchanged withthe Electron Capture and HotWire Detectors described above. I

This sophisticated gas chromatograph combines the most modern ad-vances in instrument design and performance with utmost simplicity ofoperation. Whether you use it in the research laboratory for preciseelution time measurements, or in the routine control laboratory fordozens of daily automatic analyses, its unmatched speed, resolution,reliability and precision open new areas of information on virtually anyorganic mixture amenable to gas chromatographic separation. It addsautomatic reset and programming features to an unparalleled accuracyof temperature control, to provide-for the first time-dependable unat-tended operation.

MODEL

011SERIES BASIC UNIT $1695

MODEL

020SERIES BASIC UNIT $1495

811 DIFFERENTIAL FLAME. Thelow-cost way to achieve outstandingperformance in nmedical, biomedical andpesticide residue studies whereglass columns are specified. As inthe Model 801, this unit features anall-glass injection and column system,coupled with modular design andDifferential Flame Ionization Detectorin the basic instrument.811 DIFFERENTIAL FLAME/HOTWIRE. Like the Model 810, the Model811 permits the attachment of amodular, accessory Hot Wire Detector,complete in its own separatetemperature-controlled oven, permittingdual-column thermal conductivityoperation.811 DIFFERENTIAL FLAME/ELECTRONCAPTURE. In critical pesticideresidue analyses, as well as bio-medicaldeterminations of the silyl etherderivatives of steroids, the Model 811provides low-cost proficiency. TheElectron Capture Detector canbe installed at the same time as the basicDifferential Flame Ionization Detector.811 DIFFERENTIAL FLAME MICROCROSS-SECTION. Also availablewith this version is our newest detectorsystem, the Micro Cross-SectionDetector, mounted in a separatethermostatted oven. It is interchangeablewith the Hot Wire and ElectronCapture Detectors described in thetwo paragraphs abovc.

MAIL IT NOW

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MODEL

2 22P BASIC UNIT $2800

A Preparati've Gas Chronsatographwith linear temperature programming.The temperature of the up-to-one-inchdiameter columns may be controlledprecisely by direct resistance heating. Youcan collect sufficient sample withone run, without setting timers. Completewith collection system and columns.

MODEL

1540SERIES BASIC UNIT $1950

o L1 54D THERMISTOR. Here is the worldstandard for gas chromatography.The reliability of this model has beenproved by the thousands of instrumentsinstalled and operating in thefield today. The Model 1 54D features aprecisely-thermostatted, circulatingair bath oven, and thermistor thermalconductivity detector.1 54D THERMISTOR/FLAME. With thethermistor detector and the flameonizaion detector usableindependently, in series, or in parallel.154D THERMISTOR/COLUMNSWITCHING. Three columns may beinstalled in the instrument and usedindependently or in series. Columns maybe switched in and out whileoperating, and all columns may bebackf ushed.

MODEL

154LSERIES BASIC UNIT $9501 54L THERMISTOR. The /owest-costprecision-engineered gas chromatographon the market today. Of the same ovendesign as the Model 154D and with thesame thermistor detector, the Model154L is ideal for routine analysis.1 54L THERMISTOR/COLUMNSWITCHING. Ideal for Natural GasAnalysis wherc columns must beswitched during analysis and heavyends backflushed.

S

m

I

E.A-.O-1820 HOT WIRE. This instrument hasthe same feci'ures as the Model 810.The principal difference is that the Model820 is equipped with the Dual HotWire Detector and control unit. Separateemperature control for dual inljectionblock, columns and detector.820 ELECTRON CAPTURE. The ElectronCapture Detector module isinterchanged with the basic Hot WireDetector module. The addition ofthe Ionization Detector ElectrometerAmplifier module completes this unit.820 MICRO CROSS-SECTION. TheMicro Cross-Section Detector isinterchanged wi th the Hot WireDetector module.

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