Calculation of Survival from Double Hot-water Immersion Treatment for Papayas Infested with Oriental Fruit Flies (Diptera: Tephritidae)

1987 ◽  
Vol 80 (4) ◽  
pp. 887-890 ◽  
Author(s):  
C. F. Hayes ◽  
Harry T. G. Chingon ◽  
Frederick A. Nitta ◽  
Albert M. T. Leung
Keyword(s):  
Water Immersion ◽  
Fruit Flies ◽  
Hot Water ◽  
Hot Water Immersion

scholarly journals Cold Storage and Hot-water Immersion as Quarantine Treatments for Canistel Infested with Caribbean Fruit Fly

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 570-572 ◽  
Author(s):  
Guy J. Hallman
Keyword(s):  
Cold Storage ◽  
Water Immersion ◽  
Thick Layer ◽  
Fruit Fly ◽  
Fruit Flies ◽  
Probability Density Functions ◽  
Hot Water ◽  
Anastrepha Suspensa ◽  
Caribbean Fruit Fly ◽  
Hot Water Immersion

Canistel [Pouteria campechiana (HBK.) Baehni] fruit were subjected to cold storage and hot-water immersion treatments known to kill immature Caribbean fruit flies [Anastrepha suspensa (Loew)] in other fruit. Cold storage at 1 or 3C for 17 days did not cause appreciable loss in canistel quality compared with fruit stored at the normal 10C. Unripe canistels immersed in water at 46C for 90 min or at 48C for 65 min, however, developed dark blotches on the peel and a 2- to 3-mm-thick layer under the peel that did not soften. Canistels were infested with Caribbean fruit flies and subjected to 1 or 3C storage for up to 14 days. The resulting lethality data were fitted to three probability density functions (PDF) to estimate the number of days required to achieve quarantine security (99.9968% dead). The normal and Gompertz PDFs gave some reasonable estimates, while the logistic PDF gave low estimates. At 1C, 14 days would be needed to achieve quarantine security, while at 3C a minimum of 15 days would be required. These estimates must be tested to determine if they are valid after a large amount of Caribbean fruit fly immatures is subjected to the treatments.

scholarly journals A comparison of heat acclimation by post-exercise hot water immersion and exercise in the heat

2021 ◽  
Author(s):  
Robert D. McIntyre ◽  
Michael J. Zurawlew ◽  
Samuel J. Oliver ◽  
Andrew T. Cox ◽  
Jessica A. Mee ◽  
...  
Keyword(s):  
Water Immersion ◽  
Heat Acclimation ◽  
Hot Water ◽  
Post Exercise ◽  
Hot Water Immersion

scholarly journals Local cooling during hot water immersion improves perceptions without inhibiting the acute interleukin-6 response

2021 ◽  
Author(s):  
R. G. Mansfield ◽  
S. P. Hoekstra ◽  
J. J. Bill ◽  
Christof A. Leicht
Keyword(s):  
Thermal Comfort ◽  
Interleukin 6 ◽  
Water Immersion ◽  
Hot Water ◽  
Upper Body ◽  
Healthy Male ◽  
Local Cooling ◽  
Blood Samples ◽  
Body Cooling ◽  
Hot Water Immersion

Abstract Purpose Passive elevation of body temperature can induce an acute inflammatory response that has been proposed to be beneficial; however, it can be perceived as uncomfortable. Here, we investigate whether local cooling of the upper body during hot water immersion can improve perception without inhibiting the interleukin-6 (IL-6) response. Methods Nine healthy male participants (age: 22 ± 1 years, body mass: 83.4 ± 9.4 kg) were immersed up to the waist for three 60-min water immersion conditions: 42 °C hot water immersion (HWI), 42 °C HWI with simultaneous upper-body cooling using a fan (FAN), and 36 °C thermoneutral water immersion (CON). Blood samples to determine IL-6 plasma concentration were collected pre- and post-water immersion; basic affect and thermal comfort were assessed throughout the intervention. Results Plasma IL-6 concentration was higher for HWI and FAN when compared with CON (P < 0.01) and did not differ between HWI and FAN (P = 0.22; pre to post, HWI: 1.0 ± 0.6 to 1.5 ± 0.7 pg·ml−1, FAN: 0.7 ± 0.5 to 1.1 ± 0.5 pg·ml−1, CON: 0.5 ± 0.2 to 0.5 ± 0.2 pg·ml−1). At the end of immersion, basic affect was lowest for HWI (HWI: − 1.8 ± 2.0, FAN: 0.2 ± 1.6, CON 1.0 ± 2.1, P < 0.02); thermal comfort for HWI was in the uncomfortable range (3.0 ± 1.0, P < 0.01 when compared with FAN and CON), whereas FAN (0.7 ± 0.7) and CON (-0.2 ± 0.7) were in the comfortable range. Conclusion Local cooling of the upper body during hot water immersion improves basic affect and thermal comfort without inhibiting the acute IL-6 response.

Hot-Water Immersion as a Potential Quarantine Treatment Against Pseudaulacaspis cockerelli (Homoptera: Diaspididae)

1993 ◽  
Vol 86 (4) ◽  
pp. 1167-1170 ◽  
Author(s):  
Arnold H. Hara ◽  
Trent Y. Hata ◽  
Benjamin K. S. Hu ◽  
Victoria L. Tenbrink
Keyword(s):  
Water Immersion ◽  
Hot Water ◽  
Hot Water Immersion

scholarly journals Lower-limb hot-water immersion acutely induces beneficial hemodynamic and cardiovascular responses in peripheral arterial disease and healthy, elderly controls

2017 ◽  
Vol 312 (3) ◽  
pp. R281-R291 ◽  
Author(s):  
Kate N. Thomas ◽  
André M. van Rij ◽  
Samuel J. E. Lucas ◽  
James D. Cotter
Keyword(s):  
Blood Pressure ◽  
Lower Limb ◽  
Water Immersion ◽  
Duplex Ultrasound ◽  
Arterial Disease ◽  
Hot Water ◽  
Healthy Elderly ◽  
Limb Perfusion ◽  
Peripheral Arterial ◽  
Hot Water Immersion

Passive heat induces beneficial perfusion profiles, provides substantive cardiovascular strain, and reduces blood pressure, thereby holding potential for healthy and cardiovascular disease populations. The aim of this study was to assess acute responses to passive heat via lower-limb, hot-water immersion in patients with peripheral arterial disease (PAD) and healthy, elderly controls. Eleven patients with PAD (age 71 ± 6 yr, 7 male, 4 female) and 10 controls (age 72 ± 7 yr, 8 male, 2 female) underwent hot-water immersion (30-min waist-level immersion in 42.1 ± 0.6°C water). Before, during, and following immersion, brachial and popliteal artery diameter, blood flow, and shear stress were assessed using duplex ultrasound. Lower-limb perfusion was measured also using venous occlusion plethysmography and near-infrared spectroscopy. During immersion, shear rate increased ( P < 0.0001) comparably between groups in the popliteal artery (controls: +183 ± 26%; PAD: +258 ± 54%) and brachial artery (controls: +117 ± 24%; PAD: +107 ± 32%). Lower-limb blood flow increased significantly in both groups, as measured from duplex ultrasound (>200%), plethysmography (>100%), and spectroscopy, while central and peripheral pulse-wave velocity decreased in both groups. Mean arterial blood pressure was reduced by 22 ± 9 mmHg (main effect P < 0.0001, interaction P = 0.60) during immersion, and remained 7 ± 7 mmHg lower 3 h afterward. In PAD, popliteal shear profiles and claudication both compared favorably with those measured immediately following symptom-limited walking. A 30-min hot-water immersion is a practical means of delivering heat therapy to PAD patients and healthy, elderly individuals to induce appreciable systemic (chronotropic and blood pressure lowering) and hemodynamic (upper and lower-limb perfusion and shear rate increases) responses.

Sign in / Sign up

Export Citation Format

Share Document