Log in

Relevant bibliographies by topics / CF-VaR / Journal articles

To see the other types of publications on this topic, follow the link: CF-VaR.

Journal articles on the topic 'CF-VaR'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'CF-VaR.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Souza, Helenires Queiroz de, and Izonete de Jesus Araújo Aguiar. "Diversidade de Agaricales (Basidiomycota) na Reserva Biológica Walter Egler, Amazonas, Brasil." Acta Amazonica 34, no. 1 (2004): 43–51. http://dx.doi.org/10.1590/s0044-59672004000100006.

Full text

Abstract:

Foi realizado um estudo dos representantes da Ordem Agaricales Clements (Hymenomycetes, Basidiomycotina), ocorrentes na Reserva Biológica Walter Egler, situada na Estrada AM-010, Manaus-Itacoatiara, Km 64, Latitude 02° 43' S e Longitude 59° 47' W, Rio Preto da Eva, Amazonas. A área abrange 709 ha de floresta de terra firme primária. As coletas foram realizadas no período de dezembro de 2000 a junho de 2001 e seguiu-se a metodologia usual para identificação de Agaricales. Foram estudadas um total de 39 espécies, distribuídas em 13 gêneros e seis famílias: Polyporaceae: Pleurotus sp.; Hygrophora

APA, Harvard, Vancouver, ISO, and other styles

2

Souza, Helenires Queiroz de, and Izonete de Jesus Araújo Aguiar. "Ocorrência do gênero Marasmius Fr. (Tricholomataceae, Agaricales) na Reserva Biológica Walter Egler, Amazonas, Brasil." Acta Amazonica 37, no. 1 (2007): 27–35. http://dx.doi.org/10.1590/s0044-59672007000100003.

Full text

Abstract:

O gênero Marasmius Fr. (Tricholomataceae, Agaricales) compreende fungos comumente conhecidos como cogumelos. São cosmopolitas, mas muito mais numerosos em corpos de frutificação e espécies nas regiões tropicais do que em regiões temperadas ou frias. Ocorrem mais freqüentemente sobre madeira ou folhas mortas ou vivas e mais raramente entre musgos ou gramíneas no solo. O presente trabalho teve como objetivo de estudo os representantes do gênero Marasmius Fr. ocorrentes na Reserva Biológica Walter Alberto Egler, município de Rio Preto da Eva, Amazonas. As coletas foram realizadas no período de de

APA, Harvard, Vancouver, ISO, and other styles

3

Lee, Ahreum, Byung-Ju Sohn, Ed Pavelin, et al. "Assessment of Cloud Retrieval for IASI 1D-Var Cloudy-Sky Assimilation and Improvement with an ANN Approach." Weather and Forecasting 35, no. 4 (2020): 1363–80. http://dx.doi.org/10.1175/waf-d-19-0218.1.

Full text

Abstract:

AbstractThe Unified Model (UM) data assimilation system incorporates a 1D-Var analysis of cloud variables for assimilating hyperspectral infrared radiances. For the Infrared Atmospheric Sounding Interferometer (IASI) radiance assimilation, a first guess of cloud top pressure (CTP) and cloud fraction (CF) is estimated using the minimum residual (MR) method, which simultaneously obtains CTP and CF by minimizing radiance difference between observation and model simulation. In this study, we examined how those MR-based cloud retrievals behave, using “optimum” CTP and CF that yield the best 1D-Var

APA, Harvard, Vancouver, ISO, and other styles

4

Cepák, Vladislav, and Jaromír Lukavský. "Cryoseston of the Pirin Mountains, Bulgaria." Acta Botanica Croatica 72, no. 2 (2013): 257–68. http://dx.doi.org/10.2478/botcro-2013-0012.

Full text

Abstract:

Abstract - In the cryoseston community of the Pirin Mountains, 18 species were determined. Chlorophyta: Chlamydomonas nivalis (predominant), Chloromonas brevispina, Chloromonas rostafinski, Chlainomonas rubra (new genus and species for Bulgaria, documented in Europe for only the second time), Cystococcus nivicolus and Stichococcus nivalis. Bacillariophyceae: Aulacoseira granulata var. angustissima, Hantzchia amphioxys, cf. Surirella. Fungi: cf. Chytridium chlamydococcii. Deuteromycetes: Selenotila nivalis, Chionaster nivalis, and saprophytic fungae cf. Myzocytium, Rhodosporidium toruloides, Al

APA, Harvard, Vancouver, ISO, and other styles

5

Zhurbenko, Mikhail P., Ochirbat Enkhtuya, and Samiya Javkhlan. "A first synopsis of lichenicolous fungi of Mongolia, with the description of five new species." Plant and Fungal Systematics 64, no. 2 (2019): 345–66. http://dx.doi.org/10.2478/pfs-2019-0023.

Full text

Abstract:

AbstractA first synopsis of lichenicolous fungi of Mongolia based on new collections and literature data is provided, including 114 species. Five new species are described: Capronia cogtii (on Vahliella leucophaea), Echinothecium hypogymniae (on Hypogymnia bitteri), Feltgeniomyces mongolicus (on H. bitteri), Phacopsis vulpicidae (on Vulpicida juniperina) and Roselliniella javkhlanae (on Rinodina turfacea var. ecrustacea). Two new combinations are proposed: Endococcus hafellneri (≡ Stigmidium hafellneri) and Sphaerellothecium taimyricum (≡ Sphaerellothecium thamnoliae var. taimyricum). Unidenti

APA, Harvard, Vancouver, ISO, and other styles

6

Jalink, Henk, Rob van der Schoor, Angela Frandas, Jaap G. van Pijlen, and Raoul J. Bino. "Chlorophyll fluorescence of Brassica oleracea seeds as a non-destructive marker for seed maturity and seed performance." Seed Science Research 8, no. 4 (1998): 437–43. http://dx.doi.org/10.1017/s0960258500004402.

Full text

Abstract:

AbstractA method is proposed for assessing the maturity and quality of seeds, based on measuring the amount of chlorophyll fluorescence (CF) signals of intact seeds. In general, the amount of chlorophyll is directly related to the degreening process and thus the maturity. Cabbage seeds (Brassica oleracea var. capitata) were separated into three subsamples based on the CF signals of the individual intact seeds. Seeds with the lowest amount of CF had the highest percentage of germination and normal seedlings. In a controlled deterioration test, the subsample with the lowest CF signal had slightl

APA, Harvard, Vancouver, ISO, and other styles

7

PÉREZ, M. C., S. BONILLA, and G. MARTÍNEZ. "Phytoplankton community of a polymictic reservoir, La Plata River basin, Uruguay." Revista Brasileira de Biologia 59, no. 4 (1999): 535–41. http://dx.doi.org/10.1590/s0034-71081999000400002.

Full text

Abstract:

This paper deals with the analysis of phytoplankton composition and abundance from four sampling stations at the polymictic system, Rincón del Bonete water reservoir in Uruguay. Sampling data were obtained in 4 seasonal periods between February and November 1993. A hundred and twenty-four taxa were identified, where Aulacoseira granulata (Ehrenb.) Simon., A. granulata var. angustissima (Muller) Simon., A. granulata var. angustissima f. spiralis, (Muller) Simon., A. cf. ambigua, (Grun.) Simon., A. cf.. distans (Ehrenb.) Simon., Cryptomonas spp. and Synedra ulna (Nitzsch) Ehrenberg, were always

APA, Harvard, Vancouver, ISO, and other styles

8

Sierra-Baquero, Paola Vanessa, Edgar Herney Varón-Devia, Lucimar Gomes-Días, and Camilo Ignacio Jaramillo-Barrios. "Fluctuación poblacional de trips (Frankliniella cf. gardeniae) en cultivos de mango en Tolima, Colombia." Revista Colombiana de Entomología 44, no. 2 (2018): 158–64. http://dx.doi.org/10.25100/socolen.v44i2.7311.

Full text

Abstract:

El mango es una de las frutas tropicales con mayor producción a nivel mundial; en Colombia es un cultivo con gran potencial de exportación. Sin embargo, insectos plaga como los trips, pueden incidir en su calidad y producción. En esta investigación se evaluó la relación de la fluctuación poblacional de trips (Frankliniella cf. gardeniae) con las condiciones climáticas, la fenología del mango (var. Yulima y Tommy) y los hospederos alternos en el Guamo y San Luis (Tolima). Semanalmente se muestrearon trips en inflorescencias, hojas jóvenes de mango y en arvenses asociadas, se registraron los est

APA, Harvard, Vancouver, ISO, and other styles

9

Marquardt, Gisele Carolina, and Carlos Eduardo de Mattos Bicudo. "Criptógamos do Parque Estadual das Fontes do Ipiranga, São Paulo, SP. Algas 36: Bacillariophyceae (Cymbellales)." Hoehnea 41, no. 2 (2014): 209–46. http://dx.doi.org/10.1590/s2236-89062014000200005.

Full text

Abstract:

Foi providenciado o levantamento florístico da ordem Cymbellales (Bacillariophyceae) na área do PEFI, Parque Estadual das Fontes do Ipiranga, São Paulo, SP, Brasil, com base na análise de 28 unidades amostrais. Amostras de plâncton foram obtidas com auxílio de rede e as de perifíton pela coleta e remoção das diatomáceas aderidas aos talos de macrófitas aquáticas submersas. O material foi oxidado e analisado em microscopia de luz e eletrônica de varredura. Seis gêneros e o total de 36 táxons foram identificados. Características morfológicas e dimensões das frústulas foram providenciadas para to

APA, Harvard, Vancouver, ISO, and other styles

10

Read, J., and GS Hope. "Foliar Frost-Resistance of Some Evergreen Tropical and Extratropical Australasian Nothofagus Species." Australian Journal of Botany 37, no. 5 (1989): 361. http://dx.doi.org/10.1071/bt9890361.

Full text

Abstract:

Foliar frost resistance was compared in the evergreen Australian Nothofagus species, N. cunninghamii (Hook.) Oerst. and N. moorei (F. Muell.) Krasser, and the New Guinea species, N. carrii Steenis, N. cf. carrii Steenis, N. cf. crenata var. sapeii Steenis, N. grandis Steenis, N. perryi Steenis, N. Pseudoresinosa Steenis and N. pullei Steenis. The order of frost resistance after hardening treatments was N. cunninghamii > N. moorei > New Guinea species, with T50 values (temperature at which 50% tissue damage occurs) ranging from 11.4�C in N. cunninghamii to -5.7� C in N. grandis and N. cf.

APA, Harvard, Vancouver, ISO, and other styles

11

Müller, Frank. "Additions to the bryophyte flora of Réunion (East African Islands)." Bryophyte Diversity and Evolution 18, no. 1 (2000): 91–95. http://dx.doi.org/10.11646/bde.18.1.12.

Full text

Abstract:

Nineteen species of bryophytes are reported for the first time for Réunion. Especially remarkable are the first African record of Anastrophyllum leucocephalum (Tayl.) Steph. and the first records for the East African Islands of Cephaloziella cf. vaginans Steph., Fossombronia foveolata Lindb., Riccia huebeneriana Lindenb., Barbula unguiculata Hedw., Bryum pseudotriquetrum (Hedw.) Schwägr., Chenia leptophylla (Müll.Hal.) R.H.Zander, Dicranella subsubulata (Hampe ex Müll.Hal.) A.Jaeger, Ditrichum punctulatum Mitt., Physcomitrium spathulatum (Hornsch.) Müll.Hal. var. spathulatum and Trichostomum c

APA, Harvard, Vancouver, ISO, and other styles

12

Sosa R., Breno, Yuly García V., and Glauco Sosa R. "Activity of nitrifying bacteria and productivity of crops under the use of green manure." Revista de Ciencias Agrícolas 36, no. 2 (2019): 74–86. http://dx.doi.org/10.22267/rcia.193602.119.

Full text

Abstract:

During the recycling of soil nitrogen, it is necessary to register the activity of nitrifying bacteria in nitrification. This process, in tropical conditions, is negatively affected by extreme variations in temperature, humidity, pH and organic matter during agronomic practices. Population changes of nitrifying bacteria in corn and soybean crops were evaluated under the use and management of green manure (GM). It was established as GM Mucuna pruriens var. utilis (CIAT No. 9349) - corn var. ICA 305. Ninety days later it was harvested and the residues were incorporated as LF or disposed on the s

APA, Harvard, Vancouver, ISO, and other styles

13

Hernández-Ávila, Mauricio, María Magdalena Castro-Onofre, and Arturo Cervantes-Trejo. "Vacunación canina y felina masiva en México: pobre rectoría y fallo de mercado." Salud Pública de México 62, no. 3, may-jun (2020): 306. http://dx.doi.org/10.21149/11009.

Full text

Abstract:

Objetivo. Analizar la rectoría y los mecanismos de procuración de insumos en el contexto del Programa de Acción Específico de Prevención y Control de la Rabia Humana y la Semana Nacional de Vacunación Antirrábica canina y felina en México (SNVA-C). Material y métodos. La información se obtuvo mediante solicitudes al Instituto Nacional de Transparencia, Acceso a la Información y Protección de Datos Personales. Resultados. De 2009 a 2017 se aplicaron 158.9 millones de dosis de vacuna antirrábica canina y felina (VAR-CF) por un monto de compra aproximado de 1 915 MDP. Se documentó una débil recto

APA, Harvard, Vancouver, ISO, and other styles

14

Narten, Johanna. "Avestisch frauuaši-." Indo-Iranian Journal 28, no. 1 (1985): 35–48. http://dx.doi.org/10.1163/000000085790081930.

Full text

Abstract:

AbstractAv. frauuaši- < * fra-uárti- belongs to the se root var ‘to chose’ and may be derived from the zero grade (*ulh1-ti-) or the full grade form (cf. YAv. hąm. var∂ti-, from the ani root var ‘to ward off’). The original meaning is ‘decisive choice’ (‘Wahlentscheidung’, Lommel). While the words var, fra-var ‘to chose’ and var∂na- ‘decisive choice’ are characteristic for the Gathas, in post-Gathic texts the verb developed the meaning ‘to profess’ and the noun that of ‘teaching’. In Vedic the use of v (- the ani forms are Vedic innovations -) focuses on the retinue system and the selection

APA, Harvard, Vancouver, ISO, and other styles

15

Sierra-Baquero, Paola Vanessa, Edgar Herney Varón-Devia, Lucimar Gomes-Dias, and Buenaventura Monje-Andrade. "Economic injury level for the flower thrips Frankliniella cf. gardeniae Moulton (Thysanoptera: Thripidae) in mango." Revista Facultad Nacional de Agronomía Medellín 73, no. 2 (2020): 9213–20. http://dx.doi.org/10.15446/rfnam.v73n2.81729.

Full text

Abstract:

Mango is a tropical fruit with great production and market worldwide. In Colombia, it is an important crop with high export potential. There are many arthropods affecting mango production, such as thrips that feed on leaves, flowers, and small fruits, causing damage such as deformations, scars, and premature fall of fruits. This study aimed to establish the economic injury level (EIL) of Frankliniella cf. gardenia Moulton in mango (Mangifera indica L. var. yulima and var. tommy) in Guamo and San Luis (Tolima, Colombia). The methods employed included a weekly sampling of thrips in mango inflore

APA, Harvard, Vancouver, ISO, and other styles

16

Kano, Kazuki, Hiroaki Kitazawa, Keitaro Suzuki, et al. "Effects of Organic Fertilizer on Bok Choy Growth and Quality in Hydroponic Cultures." Agronomy 11, no. 3 (2021): 491. http://dx.doi.org/10.3390/agronomy11030491.

Full text

Abstract:

Effects of corn steep liquor (organic fertilizer, OF) and conventional chemical fertilizer (CF) on the growth and yield of bok choy (Brassica rapa var. chinensis) in summer and autumn hydroponic growing systems were compared. When OF and CF were applied with the same amount of total nitrogen in summer cultivation, there was no significant difference between yields; however, the growth rate in OF was slower than in CF. When OF was applied with twice the amount of nitrogen in CF (OF2), bok choy growth and yield were significantly inhibited in summer cultivation, likely owing to dissolved oxygen

APA, Harvard, Vancouver, ISO, and other styles

17

McCarthy, John W., Kendra E. Driscoll, and Stephen R. Clayden. "Lichens in four Newfoundland provincial parks: new provincial records." Canadian Field-Naturalist 129, no. 3 (2015): 219. http://dx.doi.org/10.22621/cfn.v129i3.1720.

Full text

Abstract:

Fieldwork in J. T. Cheeseman, Sandbanks, Jipujijkuei Kuespem, and Fitzgerald’s Pond Provincial Parks, Newfoundland, has yielded 133 lichen taxa, of which 15 species are new to the province: Anisomeridium biforme, Athallia holocarpa, Caloplaca borealis, Cetrelia olivetorum, Cladonia cf. rappii, Gyalolechia xanthostigmoidea, Lecanora straminea, Lecidea brunneofusca, Micarea globulosella, Micarea prasina (s.l.), Miriquidica pycnocarpa, Pertusaria consocians, Toensbergia leucococca, Usnea fragilescens var. mollis, and Usnea silesiaca.

APA, Harvard, Vancouver, ISO, and other styles

18

Mamontov, Yu S., A. D. Potemkin, D. Ya Tubanova, and E. V. Sofronova. "Liverworts of the Dzherginsky Reserve (Republic of Buryatia)." Novosti sistematiki nizshikh rastenii 52, no. 2 (2018): 483–504. http://dx.doi.org/10.31111/nsnr/2018.52.2.483.

Full text

Abstract:

The results of detailed long-term studies of the hepatic flora of the Dzherginsky Reserve, performed in 50 collection points throughout the reserve, in the forest, sub-headland and tundra zones are presented. There are 125 species and 4 varieties, including new for Baikal Siberia Lophoziopsis excisa var. elegans, Mannia pilosa, Mesoptychia rutheana and Odontoschisma denudatum and new for Buryatia Blepharostoma trichophyllum var. brevirete, Cephaloziella uncinata, Frullania davurica, F. muscicola, Fuscocephaloziopsis loitlesbergeri, Jungermannia exsertifolia, J. cf. polaris, L. pellucida, Mesop

APA, Harvard, Vancouver, ISO, and other styles

19

BITAR, G., A. A. RAMOS-ESPLÁ, O. OCAÑA, et al. "Introduced marine macroflora of Lebanon and its distribution on the Levantine coast." Mediterranean Marine Science 18, no. 1 (2017): 138. http://dx.doi.org/10.12681/mms.1993.

Full text

Abstract:

The marine macroflora introduced into Lebanon was studied through an analysis of historical data and field studies carried out since 1991. A total of 29 introduced species have been listed: 3 Chromobionta, 13 Rhodobionta, 12 Chlorobionta and 1 Streptobionta. Among them, Caulerpa taxifolia var. distichophylla, Spatoglossum variabile and Womersleyella setacea are recorded for the first time from Lebanon. Among them, Asparagopsis taxiformis, C. taxifolia var. distichophylla, Cladophora patentiramea, Codium arabicum, Codium parvulum, Galaxaura rugosa, Halophila stipulacea, Hypnea cornuta, Laurenci

APA, Harvard, Vancouver, ISO, and other styles

20

Januzzi, Flávia Vital, Fernanda Finotti Cordeiro Perobelli, and Aureliano Angel Bressan. "Aplicação do CF@R e de cenários de stress no gerenciamento de riscos corporativos." Estudos Econômicos (São Paulo) 42, no. 3 (2012): 545–79. http://dx.doi.org/10.1590/s0101-41612012000300005.

Full text

Abstract:

O presente estudo compara dois métodos para estimação do fluxo de caixa em risco (CF@R), a saber: o modelo autorregressivo integrado com médias móveis (ARIMA) e o método de vetores autorregressivos com mecanismo de correção de erros (VAR/VECM) com variáveis exógenas, ambos aplicados ao contexto do setor elétrico brasileiro. O artigo contribui com a literatura existente pela aplicação de dois métodos com o objetivo de escolher as melhores estimativas de CF@R, objetivando melhorar o gerenciamento dos riscos corporativos: o backtesting das estimativas de fluxo de caixa em risco e a geração de cen

APA, Harvard, Vancouver, ISO, and other styles

21

Baker, R. G., J. A. Mason, and L. J. Maher. "Petaloid Organs Preserved in an Arctic Plant Macrofossil Assemblage from Full-Glacial Sediments in Southeastern Minnesota." Quaternary Research 52, no. 3 (1999): 388–92. http://dx.doi.org/10.1006/qres.1999.2085.

Full text

Abstract:

A small suite of plant macrofossils indicates that southeastern Minnesota supported subarctic to arctic vegetation 18,700 yr B.P. Fossil tepals of Polygonum viviparum are exceptionally well preserved; they occur with more fragmentary remains of Dryas integrifolia, Vaccinium uliginosum var. alpinum, and probable species of arctic Salix, S. cf. herbacea, and S. cf. arctica. The pollen spectrum from this site is dominated by Picea, Pinus, and Cyperaceae, which are typical of midwestern full-glacial sequences. Tundra-like conditions with permafrost were present in southeastern Minnesota during ful

APA, Harvard, Vancouver, ISO, and other styles

22

Rasmussen, Michael. "Iagttagelse og kontinuitet." Slagmark - Tidsskrift for idéhistorie, no. 21 (February 3, 2018): 41–57. http://dx.doi.org/10.7146/sl.v0i21.103730.

Full text

Abstract:

I kontrast til Einstein og i forlængelse af nogle temaer i fænomenologi og matematik opridser denne artikel nogle punkter i Niels Bohrs videnskabsfilosofi. Den filosofiske interesse heraf ligger i at tage komplementariteten for den "hårde" ting, som Bohr omtalte, og som filosofferne - som han generelt havde det dårligt med - efter hans mening ikke fattede meget af ( de forstod ikke, at der virkelig var noget, der skulle læres, og at de måtte ofre deres fordomme, cf. Favrholdt 1992: 34, 39, 118􀀑 Blædel 1985: 232􀀒 Rozental 1985: 80-82).

APA, Harvard, Vancouver, ISO, and other styles

23

Maseko, Innocent, Bhekumthetho Ncube, Samson Tesfay, Melake Fessehazion, Albert Thembinkosi Modi, and Tafadzwanashe Mabhaudhi. "Productivity of Selected African Leafy Vegetables under Varying Water Regimes." Agronomy 10, no. 6 (2020): 916. http://dx.doi.org/10.3390/agronomy10060916.

Full text

Abstract:

African leafy vegetables (ALVs) are nutrient dense and can contribute to crop and dietary diversity, especially in water-stressed environments. However, research on their productivity under limited water availability remains scant. The objective of the study was to evaluate growth, physiology and yield responses of three ALVs (Vigna unguiculata, Corchorus. Olitorius and Amaranthus cruentus) and a reference vegetable (Beta vulgaris var. cicla) to varying water regimes [30%, 60% and 100% of crop water requirement (ETc)]. Field trials using a randomised complete block design, replicated three tim

APA, Harvard, Vancouver, ISO, and other styles

24

Gogorev, R. M., and E. K. Lange. "Achnanthoid diatoms (Bacillariophyta) of relict Lake Mogilnoye (Kildin Island, Barents Sea)." Novosti sistematiki nizshikh rastenii 49 (2015): 13–31. http://dx.doi.org/10.31111/nsnr/2015.49.13.

Full text

Abstract:

New data on morphology of nine monoraphid diatom species from the order Achnanthales found in late summer in the uppermost brackish-water layer of the unique subpolar meromictic Lake Mogilnoye at salinity to 4 ‰ and temperature about 10 °С are presented. Four taxa, Cocconeis cf. neothumensis var. marina, Planothidium lanceolatum, P. minutissimum and Psammothidium bioretii, are recorded for the first time in the lake. New taxa, Planothidium alekseevae sp. nov., P. asymmetricum sp. nov. and P. delicatulum f. minor f. nova, are described. The lectotype of P. delicatulum is designated.

APA, Harvard, Vancouver, ISO, and other styles

25

Gogorev, R. M., and E. K. Lange. "Amphoroid and canal-raphid diatoms (Bacillariophyta) of relict Lake Mogilnoye (Kildin Island, Barents Sea)." Novosti sistematiki nizshikh rastenii 53, no. 1 (2019): 15–38. http://dx.doi.org/10.31111/nsnr/2019.53.1.15.

Full text

Abstract:

New data on morphology of eleven pennate diatoms from four orders (Thalassiophysales, Rhopalodiales, Bacillariales, Surirellales) found in the subpolar meromictic Lake Mogilnoye with the level of salinity up to 4 ‰ and the water temperature at about 10 °С are presented. Halamphora cf. dubiosa and Nitzschia soratensis are recorded for the first time for the flora of Russia, Halamphora turgida, Cymbellonitzschia diluviana, Epithemia adnata var. saxonica are found for the first time for the flora of the Murmansk Region and eight new taxa are listed for the first time for Lake Mogilnoye.

APA, Harvard, Vancouver, ISO, and other styles

26

Kiyashko, Anna A., EKATERINA F. MALYSHEVA, VLADIMÍR ANTONÍN, TATIANA YU SVETASHEVA, and EUGENIA M. BULAKH. "Fungi of the Russian Far East 2. New species and new records of Marasmius and Cryptomarasmius (Basidiomycota)." Phytotaxa 186, no. 1 (2014): 1. http://dx.doi.org/10.11646/phytotaxa.186.1.1.

Full text

Abstract:

During the study of mycobiota in the Russian Far East several interesting collections belonging to the genera Marasmius and Cryptomarasmius were made. Here we report the first records of Marasmius cf. ochroleucus, M. occultatiformis and Cryptomarasmius aucubae for the investigated territory. Two species (Marasmius macrocystidiosus, M. insolitus) and one variety (M. cohaerens var. mandshuricus) are described as new. Detailed morphological descriptions and illustrations are given. The relationships of the studied taxa with close species are discussed. Molecular phylogenetic reconstructions based

APA, Harvard, Vancouver, ISO, and other styles

27

Pickens, Jeremy M., Jason J. Danaher, Jeff L. Sibley, Jesse A. Chappell, and Terry R. Hanson. "Integrating Greenhouse Cherry Tomato Production with Biofloc Tilapia Production." Horticulturae 6, no. 3 (2020): 44. http://dx.doi.org/10.3390/horticulturae6030044.

Full text

Abstract:

Integration of intensive aquaculture systems with greenhouse plant production has been shown to improve aquaculture water quality conditions and improve plant nutrient use efficiency. The majority of the focus of integrated systems has involved raft culture or true hydroponics. Little work has been done on soilless culture utilizing drip irrigation. This study investigates the feasibility of integrating biofloc Nile tilapia (Oreochromis niloticus) production with greenhouse cherry tomato production (Solanum lycopersicum var. cerasiforme). Nile tilapia (157 g/fish) were stocked at 40 fish/m3 an

APA, Harvard, Vancouver, ISO, and other styles

28

Kumar, Pawan, Tabasum Akhter, Parul Bhardwaj, Rakesh Kumar, Usha Bhardwaj, and Sudeshna Mazumdar-Leighton. "Consequences of ‘no-choice, fixed time’ reciprocal host plant switches on nutrition and gut serine protease gene expression in Pieris brassicae L. (Lepidoptera: Pieridae)." PLOS ONE 16, no. 1 (2021): e0245649. http://dx.doi.org/10.1371/journal.pone.0245649.

Full text

Abstract:

Rapid adaptive responses were evident from reciprocal host-plant switches on performance, digestive physiology and relative gene expression of gut serine proteases in larvae of crucifer pest P. brassicae transferred from cauliflower (CF, Brassica oleracea var. botrytis, family Brassicaceae) to an alternate host, garden nasturtium, (GN, Tropaeolum majus L., family Tropaeolaceae) and vice-versa under laboratory conditions. Estimation of nutritional indices indicated that larvae of all instars tested consumed the least food and gained less weight on CF-GN diet (significant at p≤0.05) as compared

APA, Harvard, Vancouver, ISO, and other styles

29

Lortie, Guy. "Les diatomées fossiles de deux tourbières ombrotrophes du Bas-Saint-Laurent, Québec." Géographie physique et Quaternaire 37, no. 2 (2007): 159–77. http://dx.doi.org/10.7202/032512ar.

Full text

Abstract:

RÉSUMÉ Les diatomées fossiles de deux tourbières ombrotrophes du Bas-Saint-Laurent, Québec, comprennent 34 genres et 143 taxons dont seulement 49 sont communs aux deux tourbières. La distribution stratigraphiques des taxons spécifiques et les associations de diatomées permettent d'observer l'évolution des tourbières étudiées. La tourbière à sphaignes de Rivière-du-Loup possède une flore fossile hydroterrestre et acidobionte (association à Eunotia paludosa et var. pumila et E. tenella) assez stable. Dans les 30 cm supérieurs, l'association mono-spécifique à E. paludosa var. pumila suggère un ch

APA, Harvard, Vancouver, ISO, and other styles

30

Rajopadhyaya, Ritu, and Shiva Kumar Rai. "Some freshwater algae from Bagh-Jhoda wetland, Morang: new for Nepal." Journal of Natural History Museum 30 (December 1, 2018): 15–27. http://dx.doi.org/10.3126/jnhm.v30i0.27375.

Full text

Abstract:

Present paper describes new and interesting algae reported during the exploration of algal flora of Bagh-Jhoda wetland, Morang. A total of 20 species of freshwater algae, excluding cyanobacteria, have been reported from this wetland as new for Nepal. They were Ankistrodesmus spiralis, Botryococcus braunii, B. protuberans, Glaucocystis duplex, Gonium sociale, Kirchneriella contorta, Nephrocytium hydrophilum, N.obesum, Oocystiseremosphaeria, Sorastrum americanum, Staurastrum pseudosebaldi, S. striolatum var. divergens, S. subpolymorphum, Glenodinium borgei, Peridinium gatunense, Gomphonema lacus

APA, Harvard, Vancouver, ISO, and other styles

31

SIVANANTHAN, GAYATHIRI D/O, PAVARNE SHANTTI, ELENA K. KUPRIYANOVA, ZHENG BIN RANDOLPH QUEK, NICHOLAS WEI LIANG YAP, and SERENA LAY MING TEO. "Spirobranchus bakau sp. nov. from Singapore: yet another species of S. kraussii-complex (Polychaeta: Serpulidae)." Zootaxa 5040, no. 1 (2021): 33–65. http://dx.doi.org/10.11646/zootaxa.5040.1.2.

Full text

Abstract:

The intertidal serpulid polychaete Spirobranchus kraussii was originally described from South Africa and has since been reported in numerous sub (tropical) localities around the world. Recently, however, S. kraussii was uncovered as a complex of morphologically similar and geographically restricted species, raising the need to revise S. cf. kraussii populations. We formally describe S. cf. kraussii from Singapore mangroves as Spirobranchus bakau sp. nov. based on morphological and molecular data. Despite their morphological similarities, Maximum Likelihood and Bayesian Inference analyses of 18

APA, Harvard, Vancouver, ISO, and other styles

32

Slavík, Jiří, and Leonora Slavíková. "Alkaloids from Papaver albiflorum PACZ. subsp. albiflorum and P. cf. stevenianum A. D. Mikheev." Collection of Czechoslovak Chemical Communications 55, no. 7 (1990): 1812–16. http://dx.doi.org/10.1135/cccc19901812.

Full text

Abstract:

Papaver albiflorum PACZ. subsp. albiflorum (tetraploid, 2n = 28; total alkaloid content 0.001%) afforded corytuberine, protopine and allocryptopine as dominant alkaloids; in addition, small amounts of macambrine, thebaine, scoulerine, rhoeadine, papaverrubines D, C, A and E, berberine and coptisine were detected. Papaver cf. stevenianum A. D. MIKHEEV (hexaploid, 2n = 42; total alkaloid content 0.066% and 0.015%, respectively) gave berberine as the principal alkaloid (0.065% and 0.013, respectively) which was responsible for the yellow colour of latex. Corytuberine, allocryptopine, protopine an

APA, Harvard, Vancouver, ISO, and other styles

33

Gárate -Lizárraga, I. "PROLIFERATION OF Amphidinium carterae (GYMNODINIALES: GYMNODINIACEAE) IN BAHÍA DE LA PAZ, GULF OF CALIFORNIA." CICIMAR Oceánides 27, no. 2 (2012): 37. http://dx.doi.org/10.37543/oceanides.v27i2.115.

Full text

Abstract:

During a sampling on 15 December 2011 in Bahía de La Paz, a bloom of the benthic dinoflagellate Amphidinium carterae was detected. Its abundance ranged from 28.2 to 64.8 × 103 cells L–1. Cells of A. carterae varied in length from 18 to 28 μm and 13 to 18 μm in wide (n = 30). The presence of A. carterae and benthic species of diatoms and dinoflagellates at the surface could be an indicator of upwelling water generated by northwestern winds. Seawater temperature during the bloom was 20 °C. Also, new records of dinoflagellates for the Mexican coast of the Pacific are here reported: Amphidiniopsis

APA, Harvard, Vancouver, ISO, and other styles

34

Zhang, Xiufu, Karen L. Wilson, and Jeremy J. Bruhl. "Species limits in Carpha (Schoeneae, Cyperaceae) based on phenetic analyses." Australian Systematic Botany 19, no. 5 (2006): 437. http://dx.doi.org/10.1071/sb06003.

Full text

Abstract:

We review the taxonomic history of Carpha. Recent estimates of the number of species in Carpha have varied from 4 to 15. The generic limits of Carpha and some species limits within Carpha have been uncertain. This study tests the limits of species in Carpha sensu lato by phenetic analyses of morphological data and identifies 16 species. Three of them (Carpha cf. bracteosa C.B.Clarke, C. discolor ms and C. ulugurensis ms) are new; the taxonomic ranks of C. angustissima Cherm., C. capitellata (Nees) Boeck. var. bracteosa (C.B.Clarke) Kük., C. nivicola F.Muell. and C. schoenoides Banks et Sol. ex

APA, Harvard, Vancouver, ISO, and other styles

35

VICENTE, ALICIA, Mª ÁNGELES ALONSO, LAURENT GAUTIER, and MANUEL B. CRESPO. "Revisiting the lectotype of Biscutella boetica (Brassicaceae)." Phytotaxa 268, no. 4 (2016): 291. http://dx.doi.org/10.11646/phytotaxa.268.4.8.

Full text

Abstract:

Biscutella boetica Boiss. & Reut. in Boissier (1854: 42) was described from material collected in southern Spain (“Hab. in sterilibus Boeticae circâ Malaga, Cartagena, etc. etc.”) by P.E. Boissier. The protologue includes a detailed description with diagnostic differences with regard to other annual congeners, such as B. microcarpa Candolle (1811: 298) (currently synonymised to B. lyrata Linnaeus 1771: 254), B. didyma Linnaeus (1753: 653), B. apula Linnaeus (1771: 254) nom. illeg., or B. depressa Willdenow (1809: 673) (the latter two sometimes treated as synonyms, varieties or even subspec

APA, Harvard, Vancouver, ISO, and other styles

36

Ariyanathan, Ganesh, and J. Sesh Serebiah. "Breeding and Life Cycle of Fresh Water Ornamnetal Shrimp-Indian White Banded Shrimp, Caridina cf. babaulti Var. Indian White Banded." International Journal of Current Research and Academic Review 5, no. 3 (2016): 48–55. http://dx.doi.org/10.20546/ijcrar.2016.403.006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Bhagat, Ramesh Chander, and Aijaz Ahmad Qureshi. "Breeding and Life Cycle of Fresh Water Ornamnetal Shrimp-Indian White Banded Shrimp, Caridina cf. babaulti Var. Indian White Banded." International Journal of Current Research and Academic Review 5, no. 3 (2016): 56–62. http://dx.doi.org/10.20546/ijcrar.2016.403.007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Mueller-Bieniek, Aldona, Adam Walanus, and Emil Zaitz. "Cultivated plants in medieval Kraków (Poland), with special reference to amaranth (Amaranthus lividus L. cf. var lividus) and ruderal communities." Acta Palaeobotanica 55, no. 1 (2015): 98–115. http://dx.doi.org/10.1515/acpa-2015-0003.

Full text

Abstract:

Abstract This paper summarises archaeobotanical studies of plant macroremains derived from medieval town deposits of Kraków, focusing on cultivated plants. Correspondence analysis was used in interpreting the botanical data and their archaeological context. Changes in cultivated plant composition were connected mainly with the chartering of the town under Magdeburg law in 1257, and are discussed in terms of their temporal relation to the chartering of Kraków and possible changes in the food preferences and wealth of the residents. Millet and wheat remains are rarer in specimens from after the

APA, Harvard, Vancouver, ISO, and other styles

39

Ruiz-González, Mario X., Céline Leroy, Alain Dejean, et al. "Do Host Plant and Associated Ant Species Affect Microbial Communities in Myrmecophytes?" Insects 10, no. 11 (2019): 391. http://dx.doi.org/10.3390/insects10110391.

Full text

Abstract:

Ant-associated microorganisms can play crucial and often overlooked roles, and given the diversity of interactions that ants have developed, the study of the associated microbiomes is of interest. We focused here on specialist plant-ant species of the genus Allomerus that grow a fungus to build galleries on their host-plant stems. Allomerus-inhabited domatia, thus, might be a rich arena for microbes associated with the ants, the plant, and the fungus. We investigated the microbial communities present in domatia colonised by four arboreal ants: Allomerus decemarticulatus, A. octoarticulatus, A.

APA, Harvard, Vancouver, ISO, and other styles

40

Maggini, Valentina, Giovanna Pesavento, Isabel Maida, et al. "Exploring the Effect of the Composition of Three Different Oregano Essential Oils on the Growth of Multidrug-Resistant Cystic Fibrosis Pseudomonas aeruginosa Strains." Natural Product Communications 12, no. 12 (2017): 1934578X1701201. http://dx.doi.org/10.1177/1934578x1701201234.

Full text

Abstract:

Oregano essential oils (EOs) could represent interesting therapeutic strategies to treat multidrug-resistant (MDR) pathogens as Pseudomonas aeruginosa, responsible for respiratory infections in cystic fibrosis (CF) patients. There could be a great variability in EOs composition when extracted from different plant species. The aim of this study was to chemically characterize and to test EOs, extracted from Origanum compactum, Origanum vulgare and Origanum vulgare var. hirtum, for in vitro antimicrobial activity against a panel of twenty MDR P. aeruginosa strains isolated from CF patients. EOs m

APA, Harvard, Vancouver, ISO, and other styles

41

EVAGELOPOULOS, A. "Taxonomic notes on Protoperidinium (Peridiniales, Dinophyceae) species in the Thermaikos Bay (North Aegean Sea, Greece)." Mediterranean Marine Science 3, no. 2 (2002): 41. http://dx.doi.org/10.12681/mms.247.

Full text

Abstract:

The thecal morphology and plate pattern of fourteen species of the genus Protoperidinium, found in the inner Thermaikos Bay (North Aegean Sea, Eastern Mediterranean) during the period 1989-1992, are described and discussed. These species are: P. depressum, P. oceanicum, P. oblongum, P. claudicans, P. punctulatum, P. conicum var. concavum ?, P. cf. obtusum, P. sp., P. brochi, P. divergens, P. curtipes, P. oviforme, P. pallidum and P. diabolus. Among the fourteen species, P. cf. obtusum and P. sp. are the most interesting from a taxonomic point of view. The morphology of the theca of each specie

APA, Harvard, Vancouver, ISO, and other styles

42

Naher, M. Shamsun, AHF Fahim, and MA Wadud. "Crop productivity and nutrient uptake of fenugreek (Trigonella foenum-graecum L.) as influenced by integrated nutrient management." SAARC Journal of Agriculture 14, no. 1 (2016): 71–79. http://dx.doi.org/10.3329/sja.v14i1.29577.

Full text

Abstract:

A field experiment was carried out at Spices Research Centre, Shibgonj, Bogra during two consecutive years, 2013-2014 and 2014-2015 to evaluate the response of integrated nutrient management on nutrient uptake, protein content and seed yield of fenugreek (Trigonella foenum-graecum L.) var. BARI Fenugreek-2. The field experiment was conducted in combination with inorganic fertilizer and organic manure. The result showed that the treatment T7 compeises application of PM @ 4 t ha-1 + CF (IPNS) produced the maximum seed yield (2.1 t ha-1) but statistically identical to T8 (VC @ 3 t ha-1 + CF (IPNS

APA, Harvard, Vancouver, ISO, and other styles

43

Fontana, Luciane, and Denise de C. Bicudo. "Diatomáceas (Bacillariophyceae) de sedimentos superficiais dos reservatórios em cascata do Rio Paranapanema (SP/PR, Brasil): Coscinodiscophyceae e Fragilariophyceae." Hoehnea 36, no. 3 (2009): 375–86. http://dx.doi.org/10.1590/s2236-89062009000300001.

Full text

Abstract:

Foi realizado inventário das diatomáceas pertencentes às classes Coscinodiscophyceae e Fragilariophyceae de sedimentos superficiais dos reservatórios em cascata do Rio Paranapanema. Amostras de sedimentos foram coletadas com draga, em três estações de amostragem de quatro reservatórios localizados nas regiões do alto trecho do rio (represas de Jurumirim e Chavantes) e médio (represas de Salto Grande e Capivara) e, em duas estações, no baixo Paranapanema (Represa de Rosana). Foram identificados 13 táxons infragenéricos, seis e sete respectivamente pertencentes às classes Coscinodiscophyceae e F

APA, Harvard, Vancouver, ISO, and other styles

44

Castro, Albinei Araujo de, Rosana Quaresma Maneschy, Ilmaione Keiza De Souza Oliveira, Tatiane Pereira Guimarães, and Karolinny Carneiro Guerra-Costa. "SOBREVIVÊNCIA DE ESPECIES MADEIRÁVEIS EM SISTEMA AGROSSILVIPASTORIL EM SÃO DOMINGOS DO ARAGUAIA, PA." Revista Agroecossistemas 3, no. 1 (2013): 111. http://dx.doi.org/10.18542/ragros.v3i1.1391.

Full text

Abstract:

RESUMO: Os sistemas agrossilvipastoris têm sido uma alternativa indicada para reabilitação de áreas de pastagens degradadas. Objetivou-se avaliar a taxa de sobrevivência de mudas de espécies madeiráveis em ação-teste agrossilvipastoril implantada em unidade de produção familiar no assentamento “Belo Horizonte I”, em São Domingos do Araguaia-PA. Foram avaliadas durante um ano as espécies: ipê amarelo (Tabebuia serratifolia), ipê branco (T. roseo-alba), ipê roxo (Tabebuia cf. impetiginosa), oiti (Moquilea tomentosa), paricá (Schizolobium parahyba var. amazonicum), pata de vaca (Bauhinia longifol

APA, Harvard, Vancouver, ISO, and other styles

45

Fan, Lihua, Jun Song, Charles F. Forney, and Michael A. Jordan. "Ethanol Production and Chlorophyll Fluorescence Predict Breakdown of Heat-stressed Apple Fruit During Cold Storage." Journal of the American Society for Horticultural Science 130, no. 2 (2005): 237–43. http://dx.doi.org/10.21273/jashs.130.2.237.

Full text

Abstract:

Ethanol concentration and chlorophyll fluorescence (CF) were measured as signs of heat stress in apple fruit [Malus sylvestris (L.) Mill. var. domestica (Borkh.) Mansf.]. `McIntosh', `Cortland', `Jonagold', and `Northern Spy' apples were placed in trays and exposed to 46 °C for 0, 4, 8, or 12 hours. Following treatments, fruit were stored in air at 0 °C and evaluated after 0, 1, 2, or 3 months. Ethanol and ethylene production, CF, peel and flesh browning, firmness, skin color, soluble solids, and titratable acidity were measured. Increases in ethanol were apparent immediately following 12-hour

APA, Harvard, Vancouver, ISO, and other styles

46

Anker, Arthur, Paulo P. G. Pachelle, Sammy DE GRAVE, and Kristin M. Hultgren. "Taxonomic and biological notes on some Atlantic species of the snapping shrimp genus Synalpheus Spence Bate, 1888 (Decapoda, Alpheidae)." Zootaxa 3598, no. 1 (2012): 1–96. http://dx.doi.org/10.11646/zootaxa.3598.1.1.

Full text

Abstract:

The present study is a preliminary report on 36 Atlantic species of the snapping shrimp genus Synalpheus Spence Bate, 1888; 32 from the western Atlantic and four from the eastern Atlantic. The vast majority of specimens were collected along the Caribbean coast of Panama between 2005 and 2008 and around São Tomé Island in 2006. Additional specimens were collected in Costa Rica, Honduras, Belize, Mexico, Dominican Republic, Aruba, Venezuela, Florida, Brazil and Cape Verde, between 1998 and 2011. Some older museum material was also examined. Three nominal varieties or subspecies, viz. S. tumidoma

APA, Harvard, Vancouver, ISO, and other styles

47

WEI, NAN, CHRISTIAN D. JERSABEK, and YUFENG YANG. "Rotifers from China (Western Guangdong Province), with description of Lecane zhanjiangensis sp. nov. (Rotifera: Monogononta: Lecanidae)." Zootaxa 4603, no. 1 (2019): 66. http://dx.doi.org/10.11646/zootaxa.4603.1.3.

Full text

Abstract:

Littoral rotifers were collected in three prefectural cities of the little studied Western Guangdong Province (Yangjiang, Maoming and Zhanjiang) in April 2017 and in July 2018. Fifty-six monogonont taxa, including two subspecies/variations, were found. Lecane zhanjiangensis sp. nov., a new brackish-water species from the littoral zone of Shimenhe River Estuary in Zhanjiang, is described. It is characterized by large semicircular projections antero-laterally on the dorsal plate, each equipped with three to five minute spines, and a pair of large acutely pointed projections antero-laterally on t

APA, Harvard, Vancouver, ISO, and other styles

48

Frahm, Jan-Peter, Anja Lindlar, Philip Sollman, and Eberhard Fischer. "Bryophytes from the Cape Verde Islands." Bryophyte Diversity and Evolution 12, no. 1 (1996): 123–53. http://dx.doi.org/10.11646/bde.12.1.15.

Full text

Abstract:

Almost 450 specimens of bryophytes, so far the largest collection of bryophytes ever made on the Cape Verde Islands, were collected in 1995 by the second author on the major islands of the archipelago. Twenty seven species (3 hepatics, 24 mosses) are reported as new to the Cape Verde Islands: Lejeunea ulicina (Tayl.) Gottsche et al., Riccia cavernosa Hoffm. emend. Raddi, Targionia hypophylla L., Barbula cf. consanguinea (Thwait. & Mitt.) Jaeg., Barbula unguiculata Hedw., Brachymenium exile (Dozy & Molk.) Bosch. & Lac., Bryoerythrophyllum ferruginascens (Stirt.) Giac., Bryoerythroph

APA, Harvard, Vancouver, ISO, and other styles

49

Rijat Leblad, Benlahcen, Nina Lundholm, Didier Goux, et al. "Pseudo-nitzschia Peragallo (Bacillariophyceae) diversity and domoic acid accumulation in tuberculate cockles and sweet clams in M’diq Bay, Morocco." Acta Botanica Croatica 72, no. 1 (2013): 35–47. http://dx.doi.org/10.2478/v10184-012-0004-x.

Full text

Abstract:

Abstract The diversity of Pseudo-nitzschia (Bacillariophyceae) and accumulation of the neurotoxin domoic acid (DA) in two types of shellfish; tuberculate cockles (Acanthocardia tuberculata) and sweet clams (Challista chione) was explored in M’diq Bay,Morocco during 2007. The highest abundances of Pseudo-nitzschia were found during the period from March to October, with peaks occurring in May and September. Toxin analysis showed an accumulation of domoic acid in shellfish sampled during spring and autumn. The maximum toxin concentration was 4.9 mg DAg-1 of the whole tissue recorded in sweet cla

APA, Harvard, Vancouver, ISO, and other styles

50

Ingram, Dewayne L., Charles R. Hall, and Joshua Knight. "Comparison of Three Production Scenarios for Buxus microphylla var. japonica ‘Green Beauty’ Marketed in a No. 3 Container on the West Coast Using Life Cycle Assessment." HortScience 52, no. 3 (2017): 357–65. http://dx.doi.org/10.21273/hortsci11596-16.

Full text

Abstract:

Three scenarios for production of Buxus microphylla var. japonica [(Mull. Arg.) Rehder & E.H. Wilson] ‘Green Beauty’ marketed in a no. 3 container on the west coast of the United States were modeled based on grower interviews and best management practices. Life cycle inventories (LCIs) of input products, equipment use, and labor were developed from the protocols for those scenarios and a life cycle assessment (LCA) was conducted to determine impact of individual components on the greenhouse gas emissions (GHGs) and the subsequent carbon footprint (CF) of the product at the nursery gate and

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!