scholarly journals Long-term Effects of Peach Production Systems for Standard and Pillar Growth Types on Yield and Economic Parameters

2011 ◽  
Vol 21 (6) ◽  
pp. 720-725 ◽  
Author(s):  
D.M. Glenn ◽  
T. Tworkoski ◽  
R. Scorza ◽  
S.S. Miller
Keyword(s):  
Prunus Persica ◽  
Production Systems ◽  
Economic Value ◽  
High Density ◽  
Low Density ◽  
Long Term Effects ◽  
Crop Load ◽  
Economic Return ◽  
Growth Types

The lack of dwarfing rootstocks for peach has led to cultural and genetic approaches that reduce tree size and vegetative growth to establish high-density plantings. The objectives of the study were to evaluate the interactions of pruning strategies, groundcover management, tree densities, and peach (Prunus persica) architecture combined in eight peach production systems on components of yield and economic value. The use of sod management reduced pruning time and costs, but the reduction of crop load reduced net return. High-density plantings in large vegetation-free areas (VFAs) had greater economic return than low-density plantings.

scholarly journals A Clinical Study of Platelet-Rich Fibrin Combined With Autologous High-Density Fat Transplantation in Augmentation Rhinoplasty

2021 ◽  
pp. 014556132110169
Author(s):  
Dan Yan ◽  
Shuai-Hua Li ◽  
An-Li Zhang ◽  
Yao Xiao ◽  
Ze-Chun Huang
Keyword(s):  
Retention Rate ◽  
Statistical Significance ◽  
High Density ◽  
Control Group ◽  
Long Term Effects ◽  
Fat Transplantation ◽  
Augmentation Rhinoplasty ◽  
Platelet Rich Fibrin ◽  
Autologous Fat

Objective: This study was designed to analyze the clinical effect of autologous fat-granule transplantation in augmentation rhinoplasty and explore methods to improve the fat retention rate. Methods: A total of 70 enrolled patients were randomly divided into 2 groups: the platelet-rich fibrin (PRF) combined with high-density fat transplantation group (combined group) and the conventional fat-granule transplantation group (control group; n = 35 in each group). In the combined group, an appropriate amount of autologous fat was extracted and centrifuged, and the lower layer of high-density fat was taken and mixed with PRF isolated from whole blood for autotransplantation. In the control group, only fat was extracted and centrifuged for transplantation. The patients were followed up with for more than one year to observe the short- and long-term effects, complications, safety, and patient satisfaction. Results: Six months after the operation, the nasal shape was stable, the contour was higher and more stereoscopic than before, the average increase of nasal height was 3.0 mm in the combined group and 2.0 mm in the control group. No complications, such as fat embolism, infection, or necrosis occurred during the 1-year follow-up. The satisfaction rate between the 2 groups has statistical significance ( P < .05). Conclusion: Overall, PRF combined with autologous high-density fat transplantation is simple to perform, has a significantly increased fat-retention rate than the control group, and has stable long-term effects without obvious adverse reactions. A sufficient amount of fat and PRF transplantation can achieve a good orthopedic effect. Thus, this method can be widely used in clinical augmentation rhinoplasty.

Effects of overstory competition on canopy recruitment patterns of naturally regenerated longleaf pine on two site types

2020 ◽  
Vol 50 (7) ◽  
pp. 624-635
Author(s):  
Patrick J. Curtin ◽  
Benjamin O. Knapp ◽  
Steven B. Jack ◽  
Lance A. Vickers ◽  
David R. Larsen ◽  
...  
Keyword(s):  
Longleaf Pine ◽  
Pinus Palustris ◽  
Height Growth ◽  
Growth Patterns ◽  
High Density ◽  
Low Density ◽  
Individual Tree ◽  
Pine Trees ◽  
Overstory Trees

Recent interest in continuous cover forest management of longleaf pine (Pinus palustris Mill.) ecosystems raises questions of long-term sustainability because of uncertainty in rates of canopy recruitment of longleaf pine trees. We destructively sampled 130 naturally regenerated, midstory longleaf pines across an 11 300 ha, second-growth longleaf pine landscape in southwestern Georgia, United States, to reconstruct individual tree height growth patterns. We tested effects of stand density (using a competition index) and site quality (based on two site classifications: mesic and xeric) on height growth and demographics of midstory trees. We also compared height growth of paired midstory and overstory trees to infer stand regeneration and recruitment dynamics. In low-density stands, midstory trees were younger and grew at greater rates than trees within high-density stands. Midstory trees in low-density stands were mostly from a younger regeneration cohort than their paired overstory trees, whereas midstory–overstory pairs in high-density stands were mostly of the same cohort. Our results highlight the importance of releasing midstory longleaf pine trees from local competition for sustained height growth in partial-harvesting management systems. They also demonstrate patterns of long-term persistence in high-density stands, indicating flexibility in the canopy recruitment process of this shade-intolerant tree species.

An alpha slow-moving high-density-lipoprotein subfraction in serum of a patient with radiation enteritis and peritoneal carcinosis.

1989 ◽  
Vol 35 (4) ◽  
pp. 674-678
Author(s):  
J Peynet ◽  
A Legrand ◽  
B Messing ◽  
F Thuillier ◽  
F Rousselet
Keyword(s):  
High Density Lipoprotein ◽  
Density Lipoprotein ◽  
Low Density Lipoproteins ◽  
High Density ◽  
Radiation Enteritis ◽  
Low Density ◽  
Peritoneal Carcinosis ◽  
Very Low Density Lipoproteins ◽  
Slow Moving

Abstract An alpha slow-moving high-density-lipoprotein (HDL) subfraction was seen in a patient presenting with radiation enteritis and peritoneal carcinosis, who was given long-term cyclic parenteral nutrition. This subfraction, observed in addition to normal HDL, was precipitated with low-density lipoproteins (LDL) and very-low-density lipoproteins (VLDL) by sodium phosphotungstate-magnesium chloride. The patient's serum lipoproteins were analyzed after fractionation by density gradient ultracentrifugation. The alpha slow-moving HDL floated in the ultracentrifugation subfractions with densities ranging from 1.028 to 1.084 kg/L, and their main apolipoproteins included apolipoprotein E in addition to apolipoprotein A-I. These HDL were larger than HDL2. The pathogenesis of this unusual HDL subfraction is hypothesized.

Long-term effects of dryland and irrigation production systems on soil Fusarium communities in wheat

2019 ◽  
Vol 41 (4) ◽  
pp. 585-596 ◽  
Author(s):  
Bo Liu ◽  
Hsinho Wei ◽  
Weishou Shen ◽  
Hosanna Smith ◽  
James C. Correll
Keyword(s):  
Production Systems ◽  
Long Term Effects

scholarly journals Prospective Tests on Biological Models of Acupuncture

2009 ◽  
Vol 6 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Charles Shang
Keyword(s):  
Control System ◽  
Connective Tissue ◽  
Gap Junctions ◽  
Growth Control ◽  
Control Model ◽  
High Density ◽  
Acupuncture Points ◽  
Biological Models ◽  
Long Term Effects

The biological effects of acupuncture include the regulation of a variety of neurohumoral factors and growth control factors. In science, models or hypotheses with confirmed predictions are considered more convincing than models solely based on retrospective explanations. Literature review showed that two biological models of acupuncture have been prospectively tested with independently confirmed predictions: The neurophysiology model on the long-term effects of acupuncture emphasizes the trophic and anti-inflammatory effects of acupuncture. Its prediction on the peripheral effect of endorphin in acupuncture has been confirmed. The growth control model encompasses the neurophysiology model and suggests that a macroscopic growth control system originates from a network of organizers in embryogenesis. The activity of the growth control system is important in the formation, maintenance and regulation of all the physiological systems. Several phenomena of acupuncture such as the distribution of auricular acupuncture points, the long-term effects of acupuncture and the effect of multimodal non-specific stimulation at acupuncture points are consistent with the growth control model. The following predictions of the growth control model have been independently confirmed by research results in both acupuncture and conventional biomedical sciences: (i) Acupuncture has extensive growth control effects. (ii) Singular point and separatrix exist in morphogenesis. (iii) Organizers have high electric conductance, high current density and high density of gap junctions. (iv) A high density of gap junctions is distributed as separatrices or boundaries at body surface after early embryogenesis. (v) Many acupuncture points are located at transition points or boundaries between different body domains or muscles, coinciding with the connective tissue planes. (vi) Some morphogens and organizers continue to function after embryogenesis. Current acupuncture research suggests a convergence of the neurophysiology model, the connective tissue model and the growth control model. The growth control model of acupuncture set the first example of a biological model in integrative medicine with significant prediction power.

Women's Nonmarket Labor

1982 ◽  
Vol 3 (2) ◽  
pp. 251-265 ◽  
Author(s):  
JEANNE WIELAGE SMITH ◽  
ELIZABETH SMITH BENINGER
Keyword(s):  
Opportunity Cost ◽  
Economic Value ◽  
Equal Treatment ◽  
Family Management ◽  
Cost Calculation ◽  
Long Term Effects ◽  
Family Patterns ◽  
Part Time ◽  
Earning Power

Recent divorce law reforms have resulted in reduced spousal support payments of limited duration as attorneys and judges focus on equal treatment of spouses. Traditional family patterns persist, however, leaving husbands and wives in unequal positions to support themselves at divorce. Couples in long-term marriages maintain established roles and younger couples continue to choose the traditional division of labor. Wives invest in their husbands' careers by engaging in full- or part-time housekeeping and child care. Women's discontinuous labor force participation leads to skill depreciation and loss of seniority, accompanied by decreased earning power. Equal treatment at divorce requires that wives be compensated for the opportunity cost of these years spent in nonmarket labor. Family economists are encouraged to further develop formulas for opportunity cost calculation. Specialists in family management and relations are challenged to initiate programs to help couples in the process of assessing long-term effects of the allocation of human resources. Judges and attorneys are urged to recognize the economic value of wives' career opportunity cost and to develop divorce settlements that compensate women for their decreased earning power.

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