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163 Results Found

  • Article
  • Open Access
22 Citations
5,561 Views
13 Pages

Thickness Dependence of Electronic Structure and Optical Properties of F8BT Thin Films

  • Bita Ghasemi,
  • Jakub Ševčík,
  • Vojtěch Nádaždy,
  • Karol Végsö,
  • Peter Šiffalovič,
  • Pavel Urbánek and
  • Ivo Kuřitka

8 February 2022

Electronic devices based on polymer thin films have experienced a tremendous increase in their efficiency in the last two decades. One of the critical factors that affects the efficiency of polymer solar cells or light emitting devices is the presenc...

  • Article
  • Open Access
6 Citations
2,630 Views
21 Pages

11 November 2023

Significant progress has been made in the advancement of perovskite solar cells, but their commercialization remains hindered by their lead-based toxicity. Many non-toxic perovskite-based solar cells have demonstrated potential, such as Cs2AgBi0.75Sb...

  • Review
  • Open Access
22 Citations
6,023 Views
13 Pages

10 February 2023

China is one of the major cotton producers globally with small farmers. Lepidopteran pests have always been the main factor affecting cotton production. To reduce the occurrence of and damage caused by lepidopteran pests, China has employed a pest co...

  • Article
  • Open Access
20 Citations
3,058 Views
13 Pages

Mutation in the Cadherin Gene Is a Key Factor for Pink Bollworm Resistance to Bt Cotton in China

  • Ling Wang,
  • Dong Xu,
  • Yunxin Huang,
  • Huazhong Zhou,
  • Weiguo Liu,
  • Shengbo Cong,
  • Jintao Wang,
  • Wenjing Li and
  • Peng Wan

1 January 2022

Transgenic crops producing Bacillus thuringiensis (Bt) toxins are widely planted for insect control, but their efficacy may decrease as insects evolve resistance. Understanding the genetic basis of insect resistance is essential for developing an int...

  • Feature Paper
  • Article
  • Open Access
15 Citations
3,281 Views
15 Pages

Resistance Allele Frequency to Cry1Ab and Vip3Aa20 in Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae) in Louisiana and Three Other Southeastern U.S. States

  • Shucong Lin,
  • Isaac Oyediran,
  • Ying Niu,
  • Sebe Brown,
  • Don Cook,
  • Xinzhi Ni,
  • Yan Zhang,
  • Francis P. F. Reay-Jones,
  • Jeng Shong Chen and
  • Fangneng Huang
  • + 2 authors

11 April 2022

The corn earworm/bollworm, Helicoverpa zea (Boddie), is a pest species that is targeted by both Bacillus thuringiensis (Bt) maize and cotton in the United States. Cry1Ab and Vip3Aa20 are two common Bt toxins that are expressed in transgenic maize. Th...

  • Article
  • Open Access
6 Citations
4,527 Views
9 Pages

19 December 2022

Τhe fabrication of organic light-emitting diodes (OLEDs) from solution involves the major problem of stack integrity, setting the determination of the composition and the characteristics of the resulting interfaces prerequisite for the optimizati...

  • Article
  • Open Access
2 Citations
1,401 Views
14 Pages

8 July 2024

The existence of amplified spontaneous emission (ASE) is a fundamental principle of laser dyes. ASE indicates the spectral variation of the optical gain of a laser dye. Analyzing the spectral distribution of ASE is important for designing lasers. We...

  • Article
  • Open Access
3 Citations
4,123 Views
24 Pages

15 November 2019

Early-maturing and full-season Bt and non-Bt cottons were exposed to high densities of tobacco budworm (Heliothis virescens (F.)) and bollworm (Helicoverpa zea Boddie) in 0.04 ha field cages during the summers of 2011 and 2012 to measure the possible...

  • Article
  • Open Access
8 Citations
3,481 Views
11 Pages

Survival and Development of Striacosta albicosta (Smith) (Lepidoptera: Noctuidae) Immature Stages on Dry Beans, non-Bt, Cry1F, and Vip3A Maize

  • Débora G. Montezano,
  • Thomas E. Hunt,
  • Alexandre Specht,
  • Priscila M. C. Luz and
  • Julie A. Peterson

13 October 2019

Striacosta albicosta is a crop pest that causes economic damage in the United States and Canada. Only maize and dry beans are shown to be suitable hosts, since larval development is incomplete on other hosts. The objective of this study was to descri...

  • Article
  • Open Access
10 Citations
3,478 Views
17 Pages

Modulation of the Tumor Microenvironment with Trastuzumab Enables Radiosensitization in HER2+ Breast Cancer

  • Patrick N. Song,
  • Ameer Mansur,
  • Yun Lu,
  • Deborah Della Manna,
  • Andrew Burns,
  • Sharon Samuel,
  • Katherine Heinzman,
  • Suzanne E. Lapi,
  • Eddy S. Yang and
  • Anna G. Sorace

17 February 2022

DNA damage repair and tumor hypoxia contribute to intratumoral cellular and molecular heterogeneity and affect radiation response. The goal of this study is to investigate anti-HER2-induced radiosensitization of the tumor microenvironment to enhance...

  • Article
  • Open Access
2,403 Views
11 Pages

Enhancement of Photoluminescence Properties via Polymer Infiltration in a Colloidal Photonic Glass

  • Andrea Chiappini,
  • Davide Faccialà,
  • Nina I. Novikova,
  • Samim Sardar,
  • Cosimo D’Andrea,
  • Guido Scavia,
  • Chiara Botta and
  • Tersilla Virgili

30 January 2024

Photonic glasses (PGs) based on the self-assembly of monosized nanoparticles can be an effective tool for realizing disordered structures capable of tailoring light diffusion due to the establishment of Mie resonances. In particular, the wavelength p...

  • Article
  • Open Access
1 Citations
1,088 Views
26 Pages

Analysis of Insect Resistance and Ploidy in Hybrid Progeny of Transgenic BtCry1Ac Triploid Poplar 741

  • Yan Zhou,
  • Hongyu Cai,
  • Renjie Zhao,
  • Chunyu Wang,
  • Jun Zhang,
  • Minsheng Yang and
  • Jinmao Wang

18 August 2025

With the increasing severity of forest pest problems, breeding insect-resistant varieties has become a crucial task for the sustainable development of forestry. The highly insect-resistant triploid Populus line Pb29, genetically modified with BtCry1A...

  • Article
  • Open Access
352 Views
19 Pages

23 January 2026

The sustained interest in efficient, low-cost, and straightforward-to-manufacture lasers has prompted intense research into organic semiconductor laser emitter materials in recent decades. The main focus of this research is determining the optical ga...

  • Article
  • Open Access
13 Citations
4,774 Views
16 Pages

4 November 2021

Maize expressing Cry1Ab insecticidal toxin (Bt maize) is an effective method to control Sesamia nonagrioides and Ostrinia nubilalis, the most damaging corn borers of southern Europe. In this area, maize is prone to Fusarium infections, which can prod...

  • Article
  • Open Access
88 Citations
6,352 Views
13 Pages

Occurrence and Ear Damage of Helicoverpa zea on Transgenic Bacillus thuringiensis Maize in the Field in Texas, U.S. and Its Susceptibility to Vip3A Protein

  • Fei Yang,
  • José C. Santiago González,
  • Jayme Williams,
  • Donald C. Cook,
  • Ryan T. Gilreath and
  • David L. Kerns

9 February 2019

The corn earworm, Helicoverpa zea (Boddie), is a major pest of Bacillus thuringiensis (Bt) maize and cotton in the U.S. Reduced efficacy of Bt plants expressing Cry1 and Cry2 against H. zea has been reported in some areas of the U.S. In this study, w...

  • Article
  • Open Access
9 Citations
2,412 Views
12 Pages

Sensitivities of Fall Armyworm (Spodoptera frugiperda) Populations in Different Regions of China to Four Bt Proteins

  • Yanfang Zhou,
  • Chunmeng Huang,
  • Yi Chen,
  • Lanzhi Han,
  • Jiajian Xie and
  • Xiuping Chen

19 September 2023

Fall armyworm (FAW), Spodoptera frugiperda, invaded the south of China in December 2018 and has since posed a huge threat to crop production in China. However, transgenic Bacillus thuringiensis (Bt) corn can efficiently control the damage caused by F...

  • Feature Paper
  • Article
  • Open Access
25 Citations
11,034 Views
14 Pages

Slot-Die Coating of Double Polymer Layers for the Fabrication of Organic Light Emitting Diodes

  • Amruth C,
  • Marco Colella,
  • Jonathan Griffin,
  • James Kingsley,
  • Nicholas Scarratt,
  • Beata Luszczynska and
  • Jacek Ulanski

14 January 2019

This study presents the slot-die coating process of two layers of organic materials for the fabrication of organic light emitting diodes (OLEDs). Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), which is commonly used in OLEDs and...

  • Article
  • Open Access
37 Citations
6,076 Views
14 Pages

Susceptibility of Fall Armyworms (Spodoptera frugiperda J.E.) from Mexico and Puerto Rico to Bt Proteins

  • Rebeca Gutierrez-Moreno,
  • David Mota-Sanchez,
  • Carlos A. Blanco,
  • Desmi Chandrasena,
  • Christina Difonzo,
  • Jeffrey Conner,
  • Graham Head,
  • Kristina Berman and
  • John Wise

26 November 2020

Fall armyworm is one of the main pests of conventional and Bacillus thuringiensis (Bt) corn in many countries in the Americas, Africa, Asia and in Australia. We conducted diet-overlay bioassays to determine the status of susceptibility to four Bt pro...

  • Article
  • Open Access
2 Citations
2,868 Views
10 Pages

7 February 2022

We developed new bithiophene extended electron acceptors based on m-alkoxythenyl-substituted IDIC with three different end groups, named as IDT-BT-IC, IDT-BT-IC4F, and IDT-BT-IC4Cl, respectively. The ultraviolet absorption maximum was redshifted and...

  • Article
  • Open Access
4 Citations
2,508 Views
15 Pages

Movement of Striacosta albicosta (Smith) (Lepidoptera: Noctuidae) Larvae on Transgenic Bt and Non-Bt Maize

  • Débora G. Montezano,
  • Thomas E. Hunt,
  • Priscila M. Colombo da Luz,
  • Kelsey Karnik,
  • Stephen D. Kachman,
  • Ana M. Vélez and
  • Julie A. Peterson

5 June 2023

Exposure of lepidopteran pests to Bacillus thuringiensis (Bt) proteins has been shown to affect the behavior of larvae, including increased movement and avoidance of Bt-expressing plants or diet. Therefore, we hypothesized that the behavior of wester...

  • Article
  • Open Access
4 Citations
2,011 Views
11 Pages

22 October 2021

This work provided an alternative route to balance the significantly increased dielectric permittivity (ε′) and effectively retained tanδ using an effective two-step concept. Ag-deposited nano-sized BaTiO3 (Ag-nBT) hybrid particle was used as the fir...

  • Article
  • Open Access
20 Citations
3,380 Views
16 Pages

12 July 2019

Enhanced dielectric and mechanical properties of polyarylene ether nitrile (PEN) are obtained through secondary dispersion of polyaniline functionalized barium titanate (PANI-f-BT) by hot-stretching. PANI-f-BT nanoparticles with different PANI conten...

  • Article
  • Open Access
20 Citations
2,722 Views
19 Pages

Magnetoelectric Properties of Multiferroic Composites Based on BaTiO3 and Nickel-Zinc Ferrite Material

  • Dariusz Bochenek,
  • Przemysław Niemiec,
  • Dagmara Brzezińska,
  • Grzegorz Dercz,
  • Grzegorz Ziółkowski,
  • Elżbieta Jartych,
  • Jakub Grotel and
  • Jan Suchanicz

19 April 2024

The purpose of the present study was to learn the morphological, structural, ferroelectric, dielectric, electromechanical, magnetoelectric, and magnetic properties, and DC conductivity of BaTiO3-Ni0.64Zn0.36Fe2O4 (BT-F) multiferroic composites compac...

  • Article
  • Open Access
854 Views
20 Pages

Liquid chromatography–mass spectrometry analysis of Pseudomonas chlororaphis subsp. phenazini S1Bt23 extracts detected phenazine-1-carboxylic acid (PCA) and 2-hydroxyphenazine (2-OH-PHZ) as the main phenazine derivatives. We investigated their...

  • Brief Report
  • Open Access
18 Citations
5,304 Views
11 Pages

21 February 2022

Fall armyworm (FAW), Spodoptera frugiperda, is a highly destructive and invasive global noctuid pest. Its control is based on insecticide applications and Bacillus thuringiensis (Bt) insecticidal Cry toxins expressed in transgenic crops, such as Cry1...

  • Article
  • Open Access
1 Citations
3,359 Views
14 Pages

Comparative Transcriptome Analysis of Bt Resistant and Susceptible Strains in Ostrinia furnacalis (Guenée) (Lepidoptera: Crambidae)

  • Yaling Lin,
  • Qing Gao,
  • Yueqin Wang,
  • Zhenying Wang,
  • Kanglai He,
  • Suqin Shang and
  • Tiantao Zhang

19 February 2022

The evolution of target pest population resistance to Bt toxins is the most relevant threat to the sustainability of Bt technology, thus it is necessary to clarify insect resistance mechanisms. Firstly, the resistance level of Asian corn borer was de...

  • Article
  • Open Access
16 Citations
2,216 Views
19 Pages

6 June 2022

The purpose of this article is to obtain the sharp estimates of the first four initial logarithmic coefficients for the class BTs of bounded turning functions associated with a petal-shaped domain. Further, we investigate the sharp estimate of Fekete...

  • Article
  • Open Access
17 Citations
7,831 Views
10 Pages

23 May 2011

The effect of long-term feeding on Bt-maize by collembolans in the laboratory is virtually unestablished. That is why the aim of the present study was to test whether the reproduction, fecal pellet production or food preference of the collembolan F. ...

  • Article
  • Open Access
16 Citations
4,314 Views
19 Pages

Genomics and Proteomics Analyses Revealed Novel Candidate Pesticidal Proteins in a Lepidopteran-Toxic Bacillus thuringiensis Strain

  • Ayda Khorramnejad,
  • Joaquín Gomis-Cebolla,
  • Reza Talaei-Hassanlouei,
  • Yolanda Bel and
  • Baltasar Escriche

26 October 2020

Discovery and identification of novel insecticidal proteins in Bacillus thuringiensis (Bt) strains are of crucial importance for efficient biological control of pests and better management of insect resistance. In this study, the Bt strain KhF, toxic...

  • Article
  • Open Access
20 Citations
4,795 Views
16 Pages

Demographic Performance of Helicoverpa zea Populations on Dual and Triple-Gene Bt Cotton

  • Marcelo M. Rabelo,
  • Silvana V. Paula-Moraes,
  • Eliseu Jose G. Pereira and
  • Blair D. Siegfried

28 August 2020

Insecticidal toxins from Bacillus thuringiensis (Bt) are valuable tools for pest management worldwide, contributing to the management of human disease insect vectors and phytophagous insect pests of agriculture and forestry. Here, we report the effec...

  • Article
  • Open Access
1 Citations
2,386 Views
11 Pages

Sequential Cascade Doping of Conjugated-Polymer-Wrapped Carbon Nanotubes for Highly Electrically Conductive Platforms

  • Da Young Lee,
  • Da Eun Choi,
  • Yejin Ahn,
  • Hyojin Kye,
  • Min Seon Kim and
  • Bong-Gi Kim

1 July 2024

To explore a highly conductive flexible platform, this study develops PIDF-BT@SWCNT by wrapping single-walled carbon nanotubes (SWCNTs) with a conjugated polymer, PIDF-BT, known for its effective doping properties. By evaluating the doping behaviors...

  • Article
  • Open Access
2 Citations
1,449 Views
18 Pages

12 November 2024

Large-scale superconductor applications necessitate a superconducting matrix with pinning sites (PSs) that immobilize vortices at elevated temperatures and magnetic fields. While previous works focused on the single addition of nanoparticles, the sim...

  • Article
  • Open Access
38 Citations
8,191 Views
11 Pages

Improving the Performances of Perovskite Solar Cells via Modification of Electron Transport Layer

  • Mao Jiang,
  • Qiaoli Niu,
  • Xiao Tang,
  • Heyi Zhang,
  • Haowen Xu,
  • Wentao Huang,
  • Jizhong Yao,
  • Buyi Yan and
  • Ruidong Xia

16 January 2019

The commonly used electron transport material (6,6)-phenyl-C61 butyric acid methyl ester (PCBM) for perovskite solar cells (PSC) with inverted planar structures suffers from properties such as poor film-forming. In this manuscript, we demonstrate a s...

  • Feature Paper
  • Article
  • Open Access
5 Citations
2,523 Views
11 Pages

27 September 2022

Cry1A.105 is a bioengineered Bacillus thuringiensis (Bt) insecticidal protein consisting of three domains derived from Cry1Ac, Cry1Ab, and Cry1F. It is one of the two pyramided Bt toxins expressed in the MON 89034 event, a commonly planted Bt maize t...

  • Article
  • Open Access
4 Citations
2,211 Views
15 Pages

1 April 2025

Bacillus thuringiensis (Bt) is widely recognized as the most important microbial pesticide controlling various insect pests and diseases due to its insecticidal crystal proteins (ICPs) and antimicrobial metabolites. The current study investigates the...

  • Feature Paper
  • Article
  • Open Access
9 Citations
3,653 Views
16 Pages

30 June 2020

Amplified Spontaneous Emission (ASE) threshold represents a crucial parameter often used to establish if a material is a good candidate for applications to lasers. Even if the ASE properties of conjugated polymers have been widely investigated, the s...

  • Article
  • Open Access
15 Citations
4,198 Views
13 Pages

Improving Photophysical Properties of White Emitting Ternary Conjugated Polymer Blend Thin Film via Additions of TiO2 Nanoparticles

  • Sameer Al-Bati,
  • Mohammad Hafizuddin Hj. Jumali,
  • Bandar Ali Al-Asbahi,
  • Khatatbeh Ibtehaj,
  • Chi Chin Yap,
  • Saif M. H. Qaid,
  • Hamid M. Ghaithan and
  • W. A. Farooq

21 September 2020

The effect of TiO2 nanoparticles on the photophysical properties of ternary conjugated polymer (CP) blends of poly(9,9-dioctylfluorene-2,7-diyl) (PFO), poly 9,9-dioctylfluorene-alt-benzothiadiazole (F8BT) and poly(2-methoxy-5(2-ethylhexyl)-1,4 -pheny...

  • Article
  • Open Access
7 Citations
3,781 Views
13 Pages

Toxicity of Cry- and Vip3Aa-Class Proteins and Their Interactions against Spodoptera frugiperda (Lepidoptera: Noctuidae)

  • Xiaobei Liu,
  • Shen Liu,
  • Shuxiong Bai,
  • Kanglai He,
  • Yongjun Zhang,
  • Hui Dong,
  • Tiantao Zhang and
  • Zhenying Wang

16 April 2024

The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith), is one of the most important insect pests affecting corn crops worldwide. Although planting transgenic corn expressing Bacillus thuringiensis (Bt) toxins has been approved as being effectiv...

  • Article
  • Open Access
2 Citations
3,110 Views
10 Pages

25 December 2022

Indian populations of the Pink Bollworm (PBW) are resistant to Bt (Bacillus thuringiensis) cotton hybrids containing Cry1Ac and Cry2Ab genes. Segregation of these Cry genes in F1 hybrids could subject PBW to sublethal concentrations. Moreover, planti...

  • Review
  • Open Access
18 Citations
3,895 Views
17 Pages

21 February 2023

Insect pests are increasingly evolving practical resistance to insecticidal transgenic crops that produce Bacillus thuringiensis (Bt) proteins. Here, we analyzed data from the literature to evaluate the association between practical resistance to Bt...

  • Article
  • Open Access
4 Citations
2,183 Views
20 Pages

Chemically Modified Clay Adsorbents Used in the Retention of Protein and Polyphenolic Compounds from Sauvignon Blanc White Wine

  • Andreea Hortolomeu,
  • Diana Carmen Mirila,
  • Ana-Maria Roșu,
  • Florin Marian Nedeff,
  • Iuri Scutaru,
  • Dorel Ureche,
  • Rodica Sturza,
  • Adriana-Luminița Fînaru and
  • Ileana Denisa Nistor

27 March 2024

During the manufacturing process of white wine, various physicochemical reactions can occur and can affect the quality of the finished product. For this reason, it is necessary to apply different treatments to minimize distinct factors such as protei...

  • Communication
  • Open Access
3 Citations
3,596 Views
8 Pages

30 June 2021

Soybean looper (SBL), Chrysodeixis includens (Walker), is one of the major lepidopteran pests of soybean in the American continent. SBL control relies mostly on the use of insecticides and genetically modified crops expressing Bacillus thuringiensis...

  • Article
  • Open Access
10 Citations
3,774 Views
20 Pages

21 June 2023

This paper aims to investigate the use of a Romanian data source, different classifiers, and text data augmentation techniques to implement a fake news detection system. The paper focusses on text data augmentation techniques to improve the efficienc...

  • Article
  • Open Access
9 Citations
12,255 Views
16 Pages

24 May 2023

The textile and fashion industry is on the brink of a major disruption, and blockchain technology (BT) presents a promising solution that could transform the industry by facilitating supply chain transparency, traceability, and sustainability. This a...

  • Article
  • Open Access
4 Citations
3,591 Views
13 Pages

Susceptibility of Fall Armyworm Field Populations to Vip3Aa/Cry Bt Maize in a Tropical Agricultural Region

  • Alisson Franco T. Silva,
  • Luciana B. Silva,
  • José B. Malaquias,
  • Angélica S. Salustino,
  • Domingos Francisco Correia Neto,
  • Daniel M. Pacheco,
  • Daniel B. Fragoso and
  • Eliseu J. G. Pereira

24 February 2024

Fall armyworm (FAW, Spodoptera frugiperda) is a polyphagous and migratory lepidopteran pest insect in field crops and is notoriously invasive worldwide. In large portions of the Americas, its populations are managed using transgenic maize or cotton v...

  • Article
  • Open Access
83 Citations
11,848 Views
19 Pages

Brain Tumor Classification and Detection Using Hybrid Deep Tumor Network

  • Gehad Abdullah Amran,
  • Mohammed Shakeeb Alsharam,
  • Abdullah Omar A. Blajam,
  • Ali A. Hasan,
  • Mohammad Y. Alfaifi,
  • Mohammed H. Amran,
  • Abdu Gumaei and
  • Sayed M. Eldin

25 October 2022

Brain tumor (BTs) is considered one of the deadly, destructive, and belligerent disease, that shortens the average life span of patients. Patients with misdiagnosed and insufficient medical treatment of BTs have less chance of survival. For tumor ana...

  • Article
  • Open Access
16 Citations
3,765 Views
24 Pages

Multiple Known Mechanisms and a Possible Role of an Enhanced Immune System in Bt-Resistance in a Field Population of the Bollworm, Helicoverpa zea: Differences in Gene Expression with RNAseq

  • Roger D. Lawrie,
  • Robert D. Mitchell III,
  • Jean Marcel Deguenon,
  • Loganathan Ponnusamy,
  • Dominic Reisig,
  • Alejandro Del Pozo-Valdivia,
  • Ryan W. Kurtz and
  • R. Michael Roe

7 September 2020

Several different agricultural insect pests have developed field resistance to Bt (Bacillus thuringiensis) proteins (ex. Cry1Ac, Cry1F, etc.) expressed in crops, including corn and cotton. In the bollworm, Helicoverpa zea, resistance levels are incre...

  • Article
  • Open Access
5 Citations
2,642 Views
14 Pages

12 December 2023

Misinformation poses a significant challenge in the digital age, requiring robust methods to detect fake news. This study investigates the effectiveness of using Back Translation (BT) augmentation, specifically transformer-based models, to improve fa...

  • Article
  • Open Access
1,298 Views
15 Pages

12 June 2025

The incorporation of Bacillus thuringiensis (Bt) rice straw into fields may influence the growth of subsequent crops, but its ecological risks for winter vegetables remain largely unreported. Investigating the effects of Bt rice straw extracts on the...

  • Article
  • Open Access
19 Citations
5,025 Views
18 Pages

Multifunctional Bioactive Resin for Dental Restorative Materials

  • Loredana Tammaro,
  • Anna Di Salle,
  • Anna Calarco,
  • Ilenia De Luca,
  • Francesco Riccitiello,
  • Gianfranco Peluso,
  • Vittoria Vittoria and
  • Andrea Sorrentino

5 February 2020

Resin-based composites are widely used as dental restorative materials due to their excellent properties. They must have high modulus, high hardness, and be chemically inert while minimizing moisture uptake. To fulfill these higher standard prerequis...

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