Effects of temephos on the respiratory rate of the salt marsh amphipod,Gammarus mucronatus

1983 ◽  
Vol 31 (2) ◽  
pp. 148-151 ◽  
Author(s):  
Ernest Ruber ◽  
Katherine LaFrance
Keyword(s):  
Salt Marsh ◽  
Respiratory Rate ◽  
Gammarus Mucronatus

scholarly journals The Effects of Salinity Changes on the Respiratory Rate of the Prawn Palaemonetes Varians (Leach)

1956 ◽  
Vol 33 (4) ◽  
pp. 730-736 ◽  
Author(s):  
B. LOFTS
Keyword(s):  
Salt Marsh ◽  
Respiratory Rate ◽  
Sea Water ◽  
Saline Water ◽  
Salt Water ◽  
Tap Water ◽  
Drainage Ditches ◽  
Low Salinity ◽  
Salinity Changes ◽  
British Coast

1. Palaemonetes varians, variety microgenitor, commonly inhabits only saline water around the British coast. It is, however, abundant in water of extremely low salinity in the Cardiff area, where it occurs in the drainage ditches of farm land adjacent to an area of salt-marsh. 2. Animals from areas of both high and low salinity were subjected, in the laboratory, to a range of salinities varying from pure tap water to concentrated sea water. The rate of respiration at each salinity was measured. 3. The population that inhabited the almost fresh water in the ditches differed physiologically from the salt-water form, although morphologically they were identical. 4. The salt-water population showed a minimum respiratory rate when in a medium of 26% NaCl salinity. This was expected, since the animal is isotonic at this salinity and the osmoregulatory work is minimal. The second population respired least when in a medium of 6% NaCl. The significance of this is discussed.

The influence of osteopathic correction on the rate of various rhythms of the body

2019 ◽  
pp. 64-71 ◽  
Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Age Groups ◽  
Biomechanical Properties ◽  
Dispersion Analysis ◽  
The Body ◽  
Body Tissues ◽  
Age Related ◽  
Significant Difference ◽  
Before And After

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.

Urbanization impacts on production and recruitment of Fundulus heteroclitus in salt marsh creeks

2020 ◽  
Vol 645 ◽  
pp. 187-204
Author(s):  
PJ Rudershausen ◽  
JA Buckel
Keyword(s):  
Salt Marsh ◽  
Salt Marshes ◽  
Fundulus Heteroclitus ◽  
Multiple Factor Analysis ◽  
Southeastern Usa ◽  
Density Dependent ◽  
Dependent Relationship ◽  
Juvenile Abundance ◽  
The Relationship ◽  
Throw Trap

It is unclear how urbanization affects secondary biological production in estuaries in the southeastern USA. We estimated production of larval/juvenile Fundulus heteroclitus in salt marsh areas of North Carolina tidal creeks and tested for factors influencing production. F. heteroclitus were collected with a throw trap in salt marshes of 5 creeks subjected to a range of urbanization intensities. Multiple factor analysis (MFA) was used to reduce dimensionality of habitat and urbanization effects in the creeks and their watersheds. Production was then related to the first 2 dimensions of the MFA, month, and year. Lastly, we determined the relationship between creek-wide larval/juvenile production and abundance from spring and abundance of adults from autumn of the same year. Production in marsh (g m-2 d-1) varied between years and was negatively related to the MFA dimension that indexed salt marsh; higher rates of production were related to creeks with higher percentages of marsh. An asymptotic relationship was found between abundance of adults and creek-wide production of larvae/juveniles and an even stronger density-dependent relationship was found between abundance of adults and creek-wide larval/juvenile abundance. Results demonstrate (1) the ability of F. heteroclitus to maintain production within salt marsh in creeks with a lesser percentage of marsh as long as this habitat is not removed altogether and (2) a density-dependent link between age-0 production/abundance and subsequent adult recruitment. Given the relationship between production and marsh area, natural resource agencies should consider impacts of development on production when permitting construction in the southeastern USA.

Pulse oximetry-derived respiratory rate monitoring in pregnant women undergoing cesarean section

2020 ◽  
Vol 86 (4) ◽  
Author(s):  
Hideaki Ebana ◽  
Masahiro Murakawa ◽  
Yoshie Noji ◽  
Keisuke Yoshida ◽  
Jun Honda ◽  
...  
Keyword(s):  
Cesarean Section ◽  
Pulse Oximetry ◽  
Pregnant Women ◽  
Respiratory Rate

PENGARUH TINDAKAN MOBILISASI DINI TERHADAP DENYUT JANTUNG DAN FREKUENSI PERNAPASAN PADA PASIEN KRITIS DI ICU RSUD SLEMAN YOGYAKARTA

2019 ◽  
Vol 5 (3) ◽  
pp. 213-223
Author(s):  
Muhamat Nofiyanto ◽  
Tetra Saktika Adhinugraha
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Early Mobilization ◽  
Critical Conditions ◽  
P Value ◽  
Cardiorespiratory Function ◽  
Arterial Blood ◽  
Post Test ◽  
Critical Patients ◽  
Security Standards

Background: Patients with critical conditions in the ICU depend on a variety of tools to support their lifes. Patients’ conditions and and their unstable hemodynamic are challenges for nurses to perform mobilization. Less mobilization in critical patients can cause a variety of physical problems, one of them is cardiorespiratory function disorder. Objective: to investigate differences in heart rate (HR) and respiratory rate (RR) before, during, and immediately after early mobilization. Methods: This study employed quasi experiment with one group pre and post test design. Twenty four respondents were selected based on the criteria HR <110 / min at rest, Mean Arterial Blood Pressure between 60 to 110 mmHg, and the fraction of inspired oxygen <0.6. Early mobilization was performed to the respondents, and followed by assessments on the changes of respiratory rate and heart rate before, during, and immediately after the mobilization. Analysis of differences in this study used ANNOVA. Results: Before the early mobilization, mean RR was 22.54 and mean HR was 78.58. Immediately after the mobilization,  mean RR was 23.21 and mean HR was 80.75. There was no differences in the value of RR and HR, before and immediately after the early mobilization with the p-value of 0.540 and 0.314, respectively. Conclusions: Early mobilization of critical patients is relatively safe. Nurses are expected to perform early mobilization for critical patients. However, it should be with regard to security standards and rigorous assessment of the patient's conditions. Keywords: Early mobilization, critical patients, ICU

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