The potential use of the pejibaye palm in agroforestry systems

1988 ◽  
Vol 7 (3) ◽  
pp. 201-212 ◽  
Author(s):  
Charles R. Clement
Keyword(s):  
Agroforestry Systems ◽  
Potential Use

scholarly journals Current and Potential Use of Timber and Non-timber Resources of the Cacao Agroforestry Systems

2019 ◽  
Author(s):  
Pérez-Flores Julian ◽  
Facundo Sánchez Gutiérrez ◽  
Bautista-Mora Evarista ◽  
José Jesús Obrador-Olán ◽  
Ruiz-Rosado Octavio ◽  
...  
Keyword(s):  
Agroforestry Systems ◽  
Potential Use

Silvopastoral sheep and pine systems for small farmers in southern chile

1990 ◽  
Vol 1990 ◽  
pp. 159-159
Author(s):  
Herve M.P. ◽  
Balocchi O.A. ◽  
Penaloza R.
Keyword(s):  
Agroforestry Systems ◽  
Stocking Rate ◽  
Southern Chile ◽  
Red Clay ◽  
Erosion Damage ◽  
Marginal Soils ◽  
System 2 ◽  
Peasant Farmers ◽  
Clay Slopes ◽  
Potential Use

Chile's X region (40-43 degrees south), has around 1 million has. of marginal soils with forest-livestock potential use, red clay slopes being dominant, located in the coastal ranges. Subsistance agriculture with increasing erosion damage is carried out on small properties which also practice extensive livestock production with sheep and cattle.In order to study alternative land use which could benefit small peasant farmers agroforestry with sheep and pines was attempted.Two agroforestry systems using Pinus radiata D.Don and sheep were developed. System I started in 1977 planting 8 ha at 2,5 x 7m spacing. Romney ewes were introduced in 1979 initially at a stocking rate of 5/ha. Prunnings were carried out in 1980, 1984 and 1986; thinnings were done in 1982,1984 and 1986, to 7m and 200 st/ha respectively.System 2 used 20ha of conventional 2 x 2m forest planted in 1974. It was prunned and thinned in 1982,1984 and 1986 to Bm and 200 st /ha respectively and stocked initially with 4.7 Romney ewes/ha in 1983.

scholarly journals Evaluation and potential use of native forest species in the recovery of a legal reserve in the Western Amazon

2019 ◽  
Vol 13 ◽  
pp. 232
Author(s):  
Marta Silvana Volpato Sccoti ◽  
Mirian Gusmão De Jesus ◽  
Dalvan Possimoser ◽  
Scheila Cristina Biazatti ◽  
João Fideles Brito Junior
Keyword(s):  
Production Systems ◽  
Agroforestry Systems ◽  
Ecological Group ◽  
Native Forest ◽  
Forest Species ◽  
Human Occupation ◽  
Group A ◽  
Set Up ◽  
Dipteryx Odorata ◽  
Potential Use

The Brazilian Amazon, which has been heavily devastated by exploratory processes and human occupation, has great value in terms of forest resources. As such, the aim of this study was to evaluate the potential use of native forest species to constitute productive agroforestry systems that can be set up in areas of legal reserve. A floristic/phytosociological survey was carried out of tree individuals with a diameter at breast height (DBH) ≥10 cm in 12 plots of 50 x 100 m (0.5 ha). From the data, species with a density of greater than three trees ha-1 were selected, and evaluated for use and ecological group. A total of 180 species distributed in 40 botanical families were identified, of which only 23 species presented an absolute density (AD) ≥3 trees ha-1, indicating that the occurrence of most species in the area is rare. Species such as Copaifera multijuga, Dinizia excelsa, Peltogyne paniculata, Tachigali chrysophylla, Dipteryx odorata, Bertholletia excelsa and Hevea brasiliensis are used commercially and may be indicated for production systems. As a result, native Amazonian forest species have great potential for use in recovery programs, promoting the recovery of local biodiversity and the development of small rural properties. However, it is necessary to invest in research and the development of public policy to support such initiatives.

scholarly journals Decomposition and nutrient release from the mixed leaf litter of three agroforestry species in the Sudanian zone of West Africa

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Mohamed Cissé ◽  
Salifou Traoré ◽  
Babou André Bationo
Keyword(s):  
Leaf Litter ◽  
Decomposition Rate ◽  
Nutrient Release ◽  
Poor Quality ◽  
Agroforestry Systems ◽  
Decomposition Rates ◽  
Detarium Microcarpum ◽  
Biomass Management ◽  
Sudanian Zone ◽  
Potential Use

AbstractThis study was carried out to determine the rates of decomposition and nutrient release from pure and mixed leaf litter samples of three agroforestry species (Azolla africana Desv., Detarium microcarpum Guill. and Perr. and Vitellaria paradoxa C.F.Gaertn.) that have potential use as green manure. Litterbags containing a total of 5 g of pure and mixed leaf litter of different quality levels were incubated under field conditions from July to November in 2017. Litter decomposition and nutrient release (N, P, and K) rates were assessed in each litterbag. The decomposition rate (k) indicated that pure A. africana litter decomposed faster (k = 0.406 week−1) than its mixture with V. paradoxa (k = 0.114 week−1) and D. microcarpum (k = 0.103 week−1). The slowest decomposition rates were found for the pure D. microcarpum (k = 0.075 week−1) and V. paradoxa (k = 0.071 week−1) leaf litters. Mixing with A. africana litter increased the decomposition rate of both D. microcarpum and V. paradoxa leaf litter. We conclude that mixing litter of different quality can accelerate the decomposition of pure litter with poor quality and represents a practical biomass management option for farmers to improve nutrient cycling in agroforestry systems.

The growth of mica polytypes as studied by conventional and high-resolution TEM

1983 ◽  
Vol 41 ◽  
pp. 174-177
Author(s):  
A. Baronnet ◽  
M. Amouric
Keyword(s):  
Water Pressure ◽  
Point Of View ◽  
Temperature Fields ◽  
Natural Occurrence ◽  
Growth Mechanisms ◽  
Long Period ◽  
High Resolution Tem ◽  
Layer Stacking ◽  
Experimental Works ◽  
Potential Use

The origin of mica polytypes has long been a challenging problem for crystal- lographers, mineralogists and petrologists. From the petrological point of view, interest in this field arose from the potential use of layer stacking data to furnish further informations about equilibrium and/or kinetic conditions prevailing during the crystallization of the widespread mica-bearing rocks. From the compilation of previous experimental works dealing with the occurrence domains of the various mica "polymorphs" (1Mr, 1M, 2M1, 2M2 and 3T) within water-pressure vs temperature fields, it became clear that most of these modifications should be considered as metastable for a fixed mica species. Furthermore, the natural occurrence of long-period (or complex) polytypes could not be accounted for by phase considerations. This highlighted the need of a more detailed kinetic approach of the problem and, in particular, of the role growth mechanisms of basal faces could play in this crystallographic phenomenon.

An atomic-resolution microscope study of Al contracts on GaAs

1986 ◽  
Vol 44 ◽  
pp. 726-727
Author(s):  
Z. Liliental-Weber ◽  
C. Nelson ◽  
R. Ludeke ◽  
R. Gronsky ◽  
J. Washburn
Keyword(s):  
High Speed ◽  
Schottky Contacts ◽  
Detailed Knowledge ◽  
The Past ◽  
Semiconductor Interfaces ◽  
Deposited Metal ◽  
Microwave Applications ◽  
Free Interfaces ◽  
Potential Use

The properties of metal/semiconductor interfaces have received considerable attention over the past few years, and the Al/GaAs system is of special interest because of its potential use in high-speed logic integrated optics, and microwave applications. For such materials a detailed knowledge of the geometric and electronic structure of the interface is fundamental to an understanding of the electrical properties of the contact. It is well known that the properties of Schottky contacts are established within a few atomic layers of the deposited metal. Therefore surface contamination can play a significant role. A method for fabricating contamination-free interfaces is absolutely necessary for reproducible properties, and molecularbeam epitaxy (MBE) offers such advantages for in-situ metal deposition under UHV conditions

The potential use of short chain peptides in parenteral nutrition

1985 ◽  
Vol 4 ◽  
pp. 116-123 ◽  
Author(s):  
P STEHLE ◽  
S ALBERS ◽  
I AMBERGER ◽  
P PFAENDER ◽  
P FURST
Keyword(s):  
Parenteral Nutrition ◽  
Short Chain ◽  
Potential Use

Instant 99mTc Compounds

1971 ◽  
Vol 10 (03) ◽  
pp. 245-251 ◽  
Author(s):  
P. Richards ◽  
W. C. Eckelman
Keyword(s):  
Physical Properties ◽  
High Purity ◽  
Analytical Techniques ◽  
Full Potential ◽  
Labeled Compounds ◽  
Ph Adjustment ◽  
One Step ◽  
Stannous Ion ◽  
99Mtc Radiopharmaceuticals ◽  
Potential Use

SummaryThe full potential use of technetium has not been achieved despite its ideal physical properties, dosimetry and availability because of the complex preparations required for 99mTc radiopharmaceuticals. One of the goals of our work is to develop techniques for the preparation of high-purity 99mTc compounds which can be easily prepared, ideally by adding pertechnetate to a prepared solution.The use of stannous ion as reducing agent for technetium makes it possible to obtain such one-step, high-purity products. All non-radioactive components can be premixed in a single vial before addition of the radioactive pertechnetate. No final pH adjustment, further chemical manipulation or purification is required.Procedures for two instantly labeled compounds have been developed to date: 99mTc DTPA and 99mTc HSA. The 99mTc DTPA is prepared by adding pertechnetate to a previously prepared solution of stannous ion and CaNa3 DTPA which has been stored at pH 4. The 99mTc HSA is prepared by adding pertechnetate to a solution of stannous ion and HSA. The parametric variations and analytical techniques involved in formulating these procedures are described. It appears that development of kits for other biologically interesting compounds may be possible using similar procedures.

Treatment and secondary prevention of venous thromboembolism in cancer patients

2012 ◽  
Vol 03 (03) ◽  
pp. 121-125
Author(s):  
I. Pabinger ◽  
C. Ay
Keyword(s):  
Clinical Trials ◽  
Venous Thromboembolism ◽  
Cancer Patients ◽  
Oral Anticoagulants ◽  
Factor Xa ◽  
New Oral Anticoagulants ◽  
Phase Iii ◽  
Patients With Cancer ◽  
Potential Use

SummaryCancer is a major and independent risk factor of venous thromboembolism (VTE). In clinical practice, a high number of VTE events occurs in patients with cancer, and treatment of cancerassociated VTE differs in several aspects from treatment of VTE in the general population. However, treatment in cancer patients remains a major challenge, as the risk of recurrence of VTE as well as the risk of major bleeding during anticoagulation is substantially higher in patients with cancer than in those without cancer. In several clinical trials, different anticoagulants and regimens have been investigated for treatment of acute VTE and secondary prophylaxis in cancer patients to prevent recurrence. Based on the results of these trials, anticoagulant therapy with low-molecular-weight heparins (LMWH) has become the treatment of choice in cancer patients with acute VTE in the initial period and for extended and long-term anticoagulation for 3-6 months. New oral anticoagulants directly inhibiting thrombin or factor Xa, have been developed in the past decade and studied in large phase III clinical trials. Results from currently completed trials are promising and indicate their potential use for treatment of VTE. However, the role of the new oral thrombin and factor Xa inhibitors for VTE treatment in cancer patients still has to be clarified in further studies specifically focusing on cancer-associated VTE. This brief review will summarize the current strategies of initial and long-term VTE treatment in patients with cancer and discuss the potential use of the new oral anticoagulants.

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