The Forest Products Research Laboratory

1953 ◽  
Vol 141 (905) ◽  
pp. 435-444
Keyword(s):  
Research Laboratory ◽  
Forest Products ◽  
The Other

Then we speak of forest products we include not only the timber from the trees, at also such other products as derive from the bark, the leaves, or the roots. In his address, however, I shall be dealing almost exclusively with timber and its rived products. By a long-standing gentlemen’s agreement the other products, as well as certain aspects of pulping, are dealt with by the Colonial Products advisory Bureau at South Kensington, and although (or perhaps because) the boundary between us is not closely defined, it has proved over the years a very satisfactory arrangement. The work of the Forest Products Research Laboratory is, then, mainly research wood. The forester grows or tends the tree until it is felled. From that point it the business of the Forest Products Research Laboratory.

The Forest Products Research Laboratory

1953 ◽  
Vol 219 (1137) ◽  
pp. 141-150
Keyword(s):  
Research Laboratory ◽  
Research Work ◽  
Forest Products ◽  
The Other ◽  
Large Organization ◽  
Floor Space ◽  
Scientific Staff ◽  
Staff Number ◽  
Technical Services

When we speak of forest products we include not only the timber from the trees, but also such other products as derive from the bark, the leaves, or the roots. In this address, however, I shall be dealing almost exclusively with timber and its derived products. By a long-standing gentlemen’s agreement the other products, as well as certain aspects of pulping, are dealt with by the Colonial Products Advisory Bureau at South Kensington, and although (or perhaps because) the boundary between us is not closely defined, it has proved over the years a very satisfactory arrangement. The work of the Forest Products Research Laboratory is, then, mainly research on wood. The forester grows or tends the tree until it is felled. From that point it is the business of the Forest Products Research Laboratory. Before I deal with the actual research work, however, I should give you some idea of the setting in which it is carried on. The Laboratory is situated in the Chilterns, about 20 miles east of Oxford. It has about 36 acres of ground, of which 3 acres are laboratory floor-space. The scientific staff number roughly 100, and there are in addition the administrative and technical services. It is, therefore, a fairly large organization.

A Screening Attachment for an Amadas Peanut Combine1

1998 ◽  
Vol 25 (2) ◽  
pp. 110-114
Author(s):  
P. D. Blankenship ◽  
J. W. White ◽  
M. C. Lamb
Keyword(s):  
Quality Improvement ◽  
Research Laboratory ◽  
High Capacity ◽  
The Other ◽  
Market Values ◽  
Alternative Method ◽  
Cylindrical Screen ◽  
Foreign Materials

Abstract Some farmers mechanically screen farmer stock (FS) peanuts after combining to remove undesired materials for value and quality improvement. Screening is accomplished with low capacity, portable screens at the field after combining or with high capacity cleaners or screens at buying points. An alternative method for FS peanut screening has been developed cooperatively by Amadas Industries and USDA-ARS, National Peanut Research Laboratory utilizing an experimental combine screening attachment. The attachment is a hydraulically driven, rotating cylindrical screen (trommel) with an axis inclined less than 10° from horizontal during operation. Peanuts are screened with the trommel prior to entering the combine basket, and smaller, unwanted materials are returned to the soil. Thirty-eight lots of FS peanuts averaging 3.27 t/lot were combined throughout all U.S. peanut-producing regions to examine performance. Foreign materials for the screened lots averaged 2.15% less than the unscreened lots (P = 0.05). Hulls were 0.62% less in the screened lots (P = 0.05). None of the other grade factors or market values per hectare were significantly different for runner peanuts. Foreign materials for screened virginia peanuts were 2.44% less than in unscreened (P = 0.01). Loose shelled kernels were 0.44% higher (P = 0.05), hulls 0.67% lower (P = 0.10), and damage 0.56% higher in screened peanuts than in unscreened. None of the other grade factors or market values per hectare were significantly different for Virginia peanuts. Although most grade factors and values per hectare were not significantly different for screened and unscreened peanuts tested, foreign materials were reduced significantly providing needed quality improvement. Possible cleaning costs also could be reduced with the attachment.

scholarly journals Evaluation of reagin screen, a new serological test for syphilis

1976 ◽  
Vol 4 (2) ◽  
pp. 145-150
Author(s):  
J D Dyckman ◽  
R D Wende ◽  
D Gantenbein ◽  
R P Williams
Keyword(s):  
Research Laboratory ◽  
Serological Test ◽  
Venereal Disease ◽  
The Other ◽  
Screening Tests ◽  
Venereal Disease Research Laboratory ◽  
Rapid Plasma Reagin ◽  
Disease Research ◽  
Antibody Absorption

A total of 1,020 serum and plasma specimens were tested using the Venereal Disease Research Laboratory (VDRL), Rapid Plasma Reagin (RPR) card, Reagin Screen (RST) and Fluorescent Treponemal Antibody-Absorption (FTA-ABS) tests. In 257 normal patients, all screening tests were nonreactive; the FTA-ABS test was reactive for one patient. In 588 patients with treated and untreated syphilis, the RST results were 91.7% in agreement with the VDRL and RPR results. In 175 patients with diseases that cause biological false reactions, the RST was 94% in agreement with the other screening tests. The titer of the RST was within one dilution of the corresponding VDRL titer in 91.7% of the 360 speciments tested and within one dilution of the RPR titer in 96.9% of 358 specimens quantitated by both tests.

SEVERITY OF SPROUTING AS A FACTOR INFLUENCING THE DISTRIBUTION OF AMYLASE LEVELS IN PILOT MILL STREAMS OF CANADIAN WHEATS

1981 ◽  
Vol 61 (4) ◽  
pp. 817-828 ◽  
Author(s):  
J. E. KRUGER
Keyword(s):  
Research Laboratory ◽  
The Other ◽  
Harvest Year

Wheats from a wet harvest year, 1978, and a dry harvest year, 1979, were examined for levels of α-amylase in Grain Research Laboratory pilot mill streams. Specific α-amylase determinations were more discriminating than use of the amylograph in discerning differences in levels of enzyme. Wheats grown in 1978 had more enzyme present in the break flours and less in the middlings than wheats grown in 1979. On a per gram basis, a 1 CWRS wheat from 1978 and a 2 CWRS wheat from 1978 with comparable α-amylase activities had different distributions of enzyme in the mill streams. Thus the 1 CWRS 1978 contained a higher activity per gram in the 1st break, 6th middlings and bran flour but contained equal or less activity per gram in the other fractions. Model wheat systems containing 1.8% of 44-h germinated wheat and 0.3% of 96-h germinated wheat were examined for α-amylase levels per gram in pilot mill streams. It was found that the less severely sprouted system had less activity in the sizings and early middlings relative to the later middlings. These findings suggest that the observed differences in distribution of α-amylase in mill streams of wheats harvested in 1978 and 1979 can be explained by a greater severity of sprout damage in the 1978 crop year. The α-amylase versus mobility relationships for the different flour streams varied widely and was influenced by starch damage as well as other factors, β-amylase levels in the 1978 and 1979 pilot mill streams were found to have a different distribution than α-amylase.

Incidence of Attack by the Pin-hole Borer, Platypus cylindrus, F., in English Ash

1937 ◽  
Vol 28 (1) ◽  
pp. 1-3
Author(s):  
Ronald C. Fisher
Keyword(s):  
Research Laboratory ◽  
Forest Products ◽  
Industrial Research ◽  
Interesting Case ◽  
Frequent Occurrence ◽  
Standing Trees

Pin-hole borer damage to timber, caused by beetles of the families Scolytidae and Platypodidae, is associated chiefly with recently felled logs and occasionally with standing trees which are in an unhealthy condition. Information collected within recent years by the Forest Products Research Laboratory, Department of Scientific and Industrial Research, suggests that attack in standing trees may, however, be of more frequent occurrence than has been commonly supposed. In this connection, an interesting case of damage to English ash by the Platypodid beetle, Platypus cylindrus, F., is worthy of record.

The Cognitive-Cultural Systems of the Research Laboratory

2006 ◽  
Vol 27 (1) ◽  
pp. 125-145 ◽  
Author(s):  
Nancy J. Nersessian
Keyword(s):  
Biomedical Engineering ◽  
Knowledge Construction ◽  
Research Laboratory ◽  
Science Studies ◽  
Cultural Practices ◽  
The Other ◽  
Science And Engineering ◽  
Engineering Research ◽  
Cultural Systems ◽  
The One

A central challenge for science studies researchers in developing accounts of knowledge construction in science and engineering is to integrate the cognitive, social, cultural, and material dimensions of practice. Within science studies there is a perceived divide between cognitive practices, on the one hand, and cultural practices, on the other. Any such divide, though at times analytically useful, is artificial. Producing scientific knowledge requires the kind of sophisticated cognition that only rich social, cultural, and material environments can enable. This paper aims to move in the direction of an integrative account of these dimensions of practice. It discusses model-based reasoning practices in biomedical engineering research laboratories construed as ‘evolving cognitive-cultural systems’.

Using derived demand techniques to estimate Ontario roundwood demand

1983 ◽  
Vol 13 (6) ◽  
pp. 1174-1184 ◽  
Author(s):  
J. C. Nautiyal ◽  
B. K. Singh
Keyword(s):  
Paper Industry ◽  
Forest Products ◽  
Pulp And Paper Industry ◽  
The Other ◽  
Production Functions ◽  
Elasticity Of Substitution ◽  
Lumber Industry ◽  
Constant Elasticity ◽  
Constant Elasticity Of Substitution ◽  
Derived Demand

Derived demand for roundwood created by the three major forest-products industries in Ontario from 1952 to 1980 was estimated from the production functions of the industries. The Cobb–Douglas function represents the lumber and the veneer and plywood industries, and the constant elasticity of substitution (CES) function represents the pulp and paper industry. In all three industries, the derived demand for roundwood is price inelastic. A theorem that the sum of partial price elasticities of derived demand when output of the final product is held constant is equal to zero has been proved. Demand by the lumber industry showed regular fluctuations throughout the 29-year period of study, while that by the other two industries rose steadily except for a few slumps.

A Note on the prepupal Stage and the external Sex Characters of the Pupae of Anobium punctatum (Deg.) (Coleoptera, Anobiidae)

1953 ◽  
Vol 43 (4) ◽  
pp. 587-590 ◽  
Author(s):  
J. D. Bletchly
Keyword(s):  
Sex Determination ◽  
Research Laboratory ◽  
Adult Stage ◽  
Forest Products ◽  
Immature Stage ◽  
Prepupal Stage ◽  
The Common ◽  
Breeding Techniques ◽  
Anobium Punctatum

External characters enabling the sexes to be distinguished readily in the adult Anobium punctatum (Deg.), popularly known as the common furniture beetle, have been described by Kelsey & others (1945) but no account has yet been published of the external sex characters of the pupae of this Anobiid. In the course of research at the Forest Products Research Laboratory on the biology of this species, a series of larvae in the prepupal stage and of pupae have been examined to determine whether the sexes can easily be recognised in the immature stage. Sex determination, before the adult stage is reached, is of great value for expermental work on breeding techniques and other projects.

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