Development of a low-maintenance measurement approach to continuously estimate methane emissions: A case study

The chemical breakdown of organic matter in landfills represents a significant source of methane gas (CH₄). Current estimates suggest that landfills are responsible for between 3% and 19% of global anthropogenic emissions. The net CH₄ emissions resulting from biogeochemical processes and their modulation by microbes in landfills are poorly constrained by imprecise knowledge of environmental constraints. The uncertainty in absolute CH₄ emissions from landfills is therefore considerable. This study investigates a new method to estimate the temporal variability of CH₄ emissions using meteorological and CH₄ concentration measurements downwind of a landfill site in Suffolk, UK from July to September 2014, taking advantage of the statistics that such a measurement approach offers versus shorter-term, but more complex and instantaneously accurate, flux snapshots. Methane emissions were calculated from CH₄ concentrations measured 700m from the perimeter of the landfill with observed concentrations ranging from background to 46.4ppm. Using an atmospheric dispersion model, we estimate a mean emission flux of 709μgm^-2s^-1 over this period, with a maximum value of 6.21mgm^-2s^-1, reflecting the wide natural variability in biogeochemical and other environmental controls on net site emission. The emissions calculated suggest that meteorological conditions have an influence on the magnitude of CH₄ emissions. We also investigate the factors responsible for the large variability observed in the estimated CH₄ emissions, and suggest that the largest component arises from uncertainty in the spatial distribution of CH₄ emissions within the landfill area. The results determined using the low-maintenance approach discussed in this paper suggest that a network of cheaper, less precise CH₄ sensors could be used to measure a continuous CH₄ emission time series from a landfill site, something that is not practical using far-field approaches such as tracer release methods. Even though there are limitations to the approach described here, this easy, low-maintenance, low-cost method could be used by landfill operators to estimate time-averaged CH₄ emissions and their impact downwind by simultaneously monitoring plume advection and CH₄ concentrations.

MicroRNA-101 regulated transcriptional modulator SUB1 plays a role in prostate cancer

MicroRNA-101, a tumor suppressor microRNA (miR), is often downregulated in cancer and is known to target multiple oncogenes. Some of the genes that are negatively regulated by miR-101 expression include histone methyltransferase EZH2 (enhancer of zeste homolog 2), COX2 (cyclooxygenase-2), POMP (proteasome maturation protein), CERS6, STMN1, MCL-1 and ROCK2, among others. In the present study, we show that miR-101 targets transcriptional coactivator SUB1 homolog (Saccharomyces cerevisiae)/PC4 (positive cofactor 4) and regulates its expression. SUB1 is known to have diverse role in vital cell processes such as DNA replication, repair and heterochromatinization. SUB1 is known to modulate transcription and acts as a mediator between the upstream activators and general transcription machinery. Expression profiling in several cancers revealed SUB1 overexpression, suggesting a potential role in tumorigenesis. However, detailed regulation and function of SUB1 has not been elucidated. In this study, we show elevated expression of SUB1 in aggressive prostate cancer. Knockdown of SUB1 in prostate cancer cells resulted in reduced cell proliferation, invasion and migration in vitro, and tumor growth and metastasis in vivo. Gene expression analyses coupled with chromatin immunoprecipitation revealed that SUB1 binds to the promoter regions of several oncogenes such as PLK1 (Polo-like kinase 1), C-MYC, serine-threonine kinase BUB1B and regulates their expression. Additionally, we observed SUB1 downregulated CDKN1B expression. PLK1 knockdown or use of PLK1 inhibitor can mitigate oncogenic function of SUB1 in benign prostate cancer cells. Thus, our study suggests that miR-101 loss results in increased SUB1 expression and subsequent activation of known oncogenes driving prostate cancer progression and metastasis. This study therefore demonstrates functional role of SUB1 in prostate cancer, and identifies its regulation and potential downstream therapeutic targets of SUB1 in prostate cancer.

The impact of local surface changes in Borneo on atmospheric composition at wider spatial scales: coastal processes, land-use change and air quality

We present results from the OP3 campaign in Sabah during 2008 that allow us to study the impact of local emission changes over Borneo on atmospheric composition at the regional and wider scale. OP3 constituent data provide an important constraint on model performance. Treatment of boundary layer processes is highlighted as an important area of model uncertainty. Model studies of land-use change confirm earlier work, indicating that further changes to intensive oil palm agriculture in South East Asia, and the tropics in general, could have important impacts on air quality, with the biggest factor being the concomitant changes in NO(x) emissions. With the model scenarios used here, local increases in ozone of around 50 per cent could occur. We also report measurements of short-lived brominated compounds around Sabah suggesting that oceanic (and, especially, coastal) emission sources dominate locally. The concentration of bromine in short-lived halocarbons measured at the surface during OP3 amounted to about 7 ppt, setting an upper limit on the amount of these species that can reach the lower stratosphere.

Mayer-Rokitansky-Küster-Hauser syndrome: sexuality, psychological effects, and quality of life

Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is a congenital condition in which a genetic female is born with vaginal agenesis and a rudimentary to absent uterus. This condition affects a woman's ability to menstruate, to engage in penile-vaginal intercourse, and to bear children. Much has been published about how best to create a neovagina in women with MRKH, but little has been written about the psychological impact of MRKH and quality of life outcomes for women with the condition. A review of the extant literature published from 1955 to 2007 supports that (1) surgical or non-surgical creation of a neovagina alone does not ensure a successful psychological outcome, (2) psychological support at critical times can be helpful, and (3) how professionals use language to discuss the condition may positively or negatively influence a female's experience of MRKH. This article discusses the implications that existing knowledge has on future research and on clinical practice. Understanding how women with MRKH cope with and adjust to the condition will help healthcare professionals provide optimal care.

Attitudes toward nursing home residents among aides of three cultural groups

This study assesses attitudes toward elderly nursing home clients as interviewed by 255 aides from three Black cultural groups: Afro-Americans; English-speaking Caribbeans; and Haitians. Results indicate that aides from all three groups had generally positive attitudes toward the elderly and the English-speaking Caribbean group expressed the most positive attitudes. Aides did express some negative attitudes toward the families of the elderly residents for not taking care of the elderly at home. Results were interpreted as reflecting the cultural norms of the three groups which included the infrequent placement of elderly persons in nursing homes. Findings indicated a need for inservice workshops in cultural diversity for aides who serve clients from different cultural groups. Social work curricula should prepare graduate social workers to conduct such experiences.

Yield stimulation of a commonly grown cultivar of Phaseolus vulgaris L. at near-ambient ozone concentrations

Seeds of Phaseolus vulgaris L. ev. Nerina were hand-sown inside open-top chambers (OTCs) in which the plants were exposed to charcoal-filtered air (CF treatment), ambient air (NF), or ambient air with added 6, 12, 18, 25 or 30 nl 1^-1 of ozone (NF6, NF12, NF18, NF25 and NF30 treatments, respectively). Exposure commenced as the crop emerged and continued on a daily basis until the end of the season. Ozone (O₃ ) was added between 10.00 and 18.00 h GMT. The seasonal 7 h mean O₃ concentrations ranged from 10 nl l^-1 in the CF treatment to 50 nl l^-1 in the NF30 treatment. The growth and yield of P. vulgaris ev. Nerina demonstrated two distinct responses to O₃ depending upon concentration. At seasonal 7 h means of 20, 26 and 32 nl l^-1 (NF, NF6 and NF12 treatments respectively), the yield increased relative to that of the CF treatment. The increase in yield peaked at 48% in the NF6 treatment (P < 0.05), and was associated with a 55 % increase in the maximum leaf number, longer retention of the canopy, and a 45 % increase in the number of pods present at the final harvest. In contrast, seasonal 7 h mean O₃ concentrations of 38, 45 and 50 nl l^-1 (NF18, NF25 and NF30 treatments) caused 26-42 % reductions in the yield of P. vulgaris. The leaves of such plants developed extensive symptoms of O₃ injury and were prematurely abscised from the plants. The reductions in yield were due to a decrease in the numbers of seeds per pod and in the weights of individual seeds.

Regulation of fungal proteolysis on cyclic AMP-dependent protein kinase, cyclic AMP phosphodiesterase, glycogen synthase and histones

Limited proteolysis of catalytic and regulatory subunits of cyclic AMP-dependent protein kinase (A-pk), cyclic AMP phosphodiesterase, glycogen synthase, and histones by fungal protease (type XIX) was analyzed by the digested peptide bands in SDS polyacrylamide gel electrophoresis. The modulatory effects on proteolysis by nucleotides, polypeptides, and phospholipids may greatly depend on the intrinsic nature of substrates. The proteolysis of the regulatory subunit of A-pk and glycogen synthase was not regulated by nucleotides and nucleic acids. In comparison, phosphatidyl serine, cardiolipin, and pepstatin A stimulated the proteolysis of the catalytic subunit of A-pk. Whereas, lambda DNA (Hind III digest), t-RNA, GTP-, phosphatidyl serine, sphingosine inhibited the proteolysis of cyclic AMP phosphodiesterase. Moreover, MS2 RNA, lambda DNA, t-RNA, dGTP, Phosphatidyl serine, phosphatidyl inositol, antipain, and chymostatin exerted inhibitory proteolytic effect on histone VIII-S. Some of these agents also had similar inhibitory effect on other types of histones (types III-S and VII-S). The inhibitory effect of phosphatidyl serine on proteolysis of histone may be due to their interaction which was monitored by the drastic increase of uv absorbance.

A comparison of self-injury and self-poisoning from the Regional Poisoning Treatment Centre, Edinburgh

Injury and poisoning episodes at the Regional Poisoning Treatment Centre, Edinburgh, were compared for the years 1980-1986. Injury was more likely to be associated with youth, male sex and single status. When these demographic differences were controlled for, injury was found to be associated with the following clinical variables: personality disorder, previous psychiatric inpatient status, use of alcohol at the time of parasuicide and alcohol problems, and the social variables-violence against others and received from relatives in the preceding 5 years, criminal record and unemployment. These have been consistently associated with repetition of parasuicide. A history of injury as a putative marker of repetition and the clinical implication of its association with alcohol problems are discussed.

Is electroencephalographic monitoring of electroconvulsive therapy clinically useful?

Electroencephalographic (EEG) monitoring was carried out in 169 bilateral and 114 unilateral applications of electroconvulsive therapy (ECT), given to 51 patients in an everyday setting within the National Health Service by junior medical staff. In 2.5% of bilateral and 8% of unilateral applications there was disagreement between clinical and EEG assessment as to whether a fit had occurred. When an EEG fit was said to have occurred only if it lasted longer than 25 seconds, then disagreement rose to 7% in bilateral and 28% in unilateral applications; disagreement was higher with unilateral applications, as they produced more short fits than bilateral applications. If future work shows duration of seizure is clearly associated with clinical efficacy, it is suggested the case for routine EEG monitoring is greatly strengthened.

A century of delusions in south west Scotland

Two groups of patients admitted to psychiatric hospital in Dumfries were studied, drawn from the periods 1880-1889 and 1970-1979. Feighner criteria were applied to make three diagnostic categories - depression, mania and schizophrenia - and the occurrence and content of delusions were noted for each. A significant decline in the prevalence of delusional depressive illness was found between the two periods, and a similar trend was noted for delusional manic illness. In contrast, the prevalence of delusional schizophrenic illness was stable. This decline is taken to reflect a change in the phenomenology of affective illness since last century in South West Scotland. The content of delusions is also discussed.

A comparison of scales for assessing rehabilitation patients

Twenty-four chronic schizophrenic patients were assessed by the Morningside Rehabilitation Status Scale, the Krawiecka Scale, and the Social Adjustment Scale by Self-Report. Inter-rater correlations suggest that the MRSS can be used by a rater with little previous knowledge of the patient. Between-scale correlations suggest the three scales assess somewhat different dimensions. A standard approach to rehabilitation assessment is suggested.

Haloperidol decanoate v. fluphenazine decanoate as maintenance therapy in chronic schizophrenic in-patients

In a double-blind study of 38 chronic schizophrenic in-patients, haloperidol decanoate was compared with fluphenazine decanoate as maintenance therapy over 60 weeks. Both drugs were given by injection at 4-week intervals. Haloperidol and fluphenazine were assumed to be equipotent; the mean starting dose of the former was 127 mg and of the latter 106 mg. The number of withdrawals over 60 weeks was similar in both groups but relapses, strictly defined, were significantly more frequent in the haloperidol group. When patients were switched to haloperidol, Parkinsonism diminished more quickly than in the fluphenazine group, but after 60 weeks there was no difference in severity in the two drug groups. The higher relapse rate and the quicker reduction in Parkinsonism in the haloperidol group might be due to a misjudgement in equivalent doses of the two drugs. Plasma haloperidol steady state levels were reached in most patients by 8-12 weeks. Plasma neuroleptic and prolactin levels, week-by-week systemic drug availability and Parkinsonism showed less variation between injections with haloperidol than with fluphenazine.

The Nithsdale Schizophrenia Survey. VI. Relatives' expressed emotion: prevalence, patterns, and clinical assessment

A review of all known schizophrenics (n = 142) in Nithsdale, Scotland, found 50% were living with relatives or friends. Of these, 32% had high contact with a relative showing high expressed emotion (EE); put another way, 87% of all Nithsdale schizophrenics were not living in a high contact/high EE family. Parents were more critical than spouses, and more showed emotional over-involvement. A retrospective review showed a trend, not of statistical significance, towards a higher admission rate to in-patient care in patients from high EE homes. Of relatives believed by a consultant psychiatrist to be neither critical nor hostile, 80% fell into the low EE category, but only 44% thought hostile or critical belonged to the high EE category; that is, the clinician had a wider view of high EE than the Camberwell Family Interview. Relative's scores on a short patient-rejection scale were higher in high EE than in low EE relatives, but the wide scatter of scores suggested the scale could not be used to identify an individual relative with high EE.

The Nithsdale schizophrenia survey. V. Follow-up of tardive dyskinesia at 3 1/2 years

The point-prevalence of tardive dyskinesia in schizophrenics from a discrete geographical area (Nithsdale, in Dumfries and Galloway Region) in 1981, 1982, and 1984 was 31%, 27%, and 30% respectively. This suggests that the prevalence of tardive dyskinesia in a community of schizophrenics has reached a plateau. In 12% of patients there was persistent dyskinesia, i.e. abnormal involuntary movements were present at all three assessments. Persistent dyskinesia was more common in older patients. The severity of tardive dyskinesia fluctuated between assessments in 41% of patients, indicating that it is only a transient feature in some cases.

The Scottish survey of new chronic in-patients: two year follow up

'New chronic inpatients' (patients aged 18-64 years in hospital more than one but less than six years) were followed-up two years after identification in the catchment areas of 14 psychiatric hospitals, serving 56% of the Scottish population. Nine per cent had died, 71% remained in-patients, and 20% had been discharged; 40% of those discharged had no contact with after-care services, and 37% of those remaining in hospital did not need in-patient care. Discharged patients were younger, had been in hospital a shorter time, and less often had organic brain disease. Only 13% of patients who, when first identified, had been rated at a low functioning level had been discharged; 64% of those remaining in-patients at follow up had such a rating.

Uptake of circulating hyaluronic acid by the rat liver. Cellular localization in situ

The uptake of [3H]acetyl-labelled hyaluronic acid (HA) was examined in the liver, spleen and kidney of the rat after i.v. injection. 3H-activity was located by light- and electron-microscopic autoradiography after measurement by scintillation counting of tissue digests. In the liver, approximately 90% of the radioactivity was located in the sinusoidal endothelial cells, with autoradiographic grains distributed throughout the cytoplasm; 50% of the grains overlay vacuoles 0.3 to 1.2 micron in diameter. A few grains (4%) were located in Disse's space or nearby in the cytoplasm of hepatocytes. No grains were found in Kupffer cells. The remainder were randomly scattered across the sections in a pattern indicating nonspecific background activity. These observations are in accordance with the selective uptake of HA exhibited by dissociated liver cells in vitro. HA concentrations in the spleen and kidney were too low for detection by autoradiography. Splenic concentrations were much lower than in rabbits or mice; in this respect the uptake of circulating HA in the rat resembles that reported for chondroitin 4-sulphate.

The Scottish survey of psychiatric rehabilitation and support services

Rehabilitation and support services in psychiatric hospitals and general hospital psychiatric units serving two-thirds of the population of Scotland were reviewed. Although there are wide between-hospital differences, especially between rural and urban areas, the National Health Service in Scotland is making considerable efforts to provide staffing, accommodation, occupational activities, and support services for the long term mentally ill. Services provided by local authorities, with the exception of group homes, are seriously deficient. The total number of services provided by an individual hospital correlated highly with an assessment of its adequacy in providing such services in relation to other hospitals. A simple count of services may therefore be used to assess adequacy. There was also a correlation between the range of a hospital's services and numbers of misplaced new chronic in-patients.

The Scottish survey of chronic day-patients

All chronic day-patients (n = 422), defined as patients aged 18-64 years attending a day facility of a psychiatric hospital or general hospital psychiatric unit continuously for more than a year, were identified in hospitals and units serving 56% of the Scottish population. The number of day patients was 14.8 per 100,000 of the general population, but the range between hospitals was very great--0 to 37.7 per 100,000--indicating the patchy development of such care. A typical day patient was a rather chronic middle-aged male schizophrenic, who lived on his own or with ageing parents. Most patients' accommodation was satisfactory, but the occupational activity of more than a third was inappropriate; 18% could have attended a local authority sheltered workshop if one had been available.

Antitrypsin activity and enzyme inhibitors in the rheumatoid joint

Proteolytic enzyme inhibitor activity has been measured in the rheumatoid knee by 2 different techniques. The inactivation rate of trypsin injected into the joint in 13 patients was compared with synovial fluid levels of alpha-1-antitrypsin (apha 1AT), alpha-2-macroglobulin (alpha 2M) and trypsin inhibitory capacity (TIC). The lack of correlation and the fact that an inverse relationship was shown between the T1/2 to inactivation and joint damage suggests that additional mechanisms are involved in the inactivation of destructive enzymes. Serum levels of alpha 1AT and TIC were elevated in 36 rheumatoid arthritis (RA) patients when compared with control values and RA synovial fluid inhibitor levels elevated by comparison with osteoarthritic figures. The synovial fluid alpha 1AT and TIC correlated with the activity of the lysosomal enzyme beta-acetyl glucosaminidase (beta AGA) but only trace amount of neutral protease activity was detected probably because of the large concentration of inhibitors present. The deficient Pi phenotype MZ was rarely encountered.

Cellular immunity to possible synovial antigens in rheumatoid arthritis

A reaction has been demonstrated between extracts of synovial cells removed from intact rheumatoid knee joints and autologous leucocytes. The cell mediated immunity test system used was leucocyte migration inhibition. Variable reactions were found with a spectrum of allogeneic extracts when donor leucocytes came from married or transfused females or transfused males. Leucocytes from healthy (nontransfused) males showed no reaction with any of the extracts. As a period of cell culture was used prior to preparation of this extract to remove nonspecific inhibitory substances, native immunoglobulins, and complexes, the data are best explained by the presence of a foreign pathogen or altered cell component in the synovial cells of these rheumatoid patients.

THE ABSENCE OF THIAMINE PHOSPHATES FROM CEREALS

A method was devised for the separation and estimation of thiamine and its mono- and di-phosphates in cereals by extraction with perchloric acid, separation on a column of Decalso, elution with a strong solution of potassium chloride, and anion exchange chromatography with Dowex-1. Estimation was based on the thiochrome method with and without prior enzymic digestion. Analyses of two varieties of each of stored wheat, barley, and oats showed that each contained both free and bound thiamine but that none of the latter was in the form of phosphates.